1)While I (was waiting/waited/have waited) for him to call up, he (had/was having/have had) a good time...

1) While I was waiting for him to call up, he was having a good time in the bar. (Past Continuous) 2) She wrote this exercise yesterday at 8 o'clock. (Simple Past) 3) He invited me to the party yesterday. (Simple Past) 4) I passed my exam in history today. (Simple Past) 5) He read a book two days ago. (Simple Past) 6) They saw this film last week. (Simple Past) 7) She was painting the picture when I came. (Past Continuous) 8) I was making my report when you entered the ball. (Past Continuous) 9) They learnt the new words yesterday from three till seven. (Simple Past) 10) It rained this week. (Simple Past) 11) She had a bath at seven o'clock last night. (Simple Past) 12) She has washed dishes already. (Present Perfect) 13) They were having supper when the telephone rang. (Past Continuous) 14) I haven't met you for ages. (Present Perfect) 15) Last summer he went to the Caucasus. (Simple Past) 16) She was thoughtfully looking at him while he was reading a newspaper. (Past Continuous) 17) While I was sweeping the floor, Mrs. Parker began cooking. (Past Continuous) 18) I just had a telegram to say that my poor friend is badly ill again. (Simple Past) 19) We sat in silence for a few minutes. (Simple Past) 20) While she was washing up, she heard the doorbell, the voices. (Past Continuous)

1. While I was waiting for him to call up, he was having a good time in the bar.

   • Explanation: "Was waiting" is used to show continuous action in the past, and "was having" shows another continuous action happening simultaneously.

2. She was writing this exercise yesterday at 8 o'clock.

   • Explanation: "Was writing" indicates an ongoing action at a specific time in the past.

3. He invited me to the party yesterday.

   • Explanation: "Invited" is the simple past tense, which is used for completed actions at a specific time in the past.

4. I have passed my exam in history today.

   • Explanation: "Have passed" is present perfect, used for actions that have relevance to the present moment.

5. He read a book two days ago.

   • Explanation: "Read" (past tense) is used for completed actions in the past.

6. They saw this film last week.

   • Explanation: "Saw" is the simple past tense, used for completed actions at a specific time in the past.

7. She was painting the picture when I came.

   • Explanation: "Was painting" indicates an ongoing action in the past that was interrupted by another action ("I came").

8. I was making my report when you entered the hall.

   • Explanation: "Was making" shows an ongoing action that was interrupted by another action ("you entered").

9. They were learning the new words yesterday from three till seven.

   • Explanation: "Were learning" indicates an ongoing action over a specified period in the past.

10. It has rained this week.

    • Explanation: "Has rained" is present perfect, used to indicate an action that occurred at some point in the past but is relevant to the present.

11. She was having a bath at seven o'clock last night.

    • Explanation: "Was having" indicates an ongoing action at a specific time in the past.

12. She has washed dishes already.

    • Explanation: "Has washed" is present perfect, indicating an action that has been completed at some unspecified time in the past but is relevant to the present.

13. They were having supper when the telephone rang.

    • Explanation: "Were having" indicates an ongoing action that was interrupted by another action ("the telephone rang").

14. I haven't met you for ages.

    • Explanation: "Haven't met" is present perfect, used to describe an action that has not happened over a period extending to the present.

15. Last summer he went to the Caucasus.

    • Explanation: "Went" is the simple past tense, used for a completed action at a specific time in the past.

16. She was thoughtfully looking at him while he was reading a newspaper.

    • Explanation: "Was reading" indicates an ongoing action that occurred simultaneously with another past action.

17. While I was sweeping the floor, Mrs. Parker began cooking.

    • Explanation: "Was sweeping" indicates an ongoing action that was interrupted by another action ("Mrs. Parker began cooking").

18. I just have had a telegram to say that my poor friend is badly ill again.

    • Explanation: "Have had" is present perfect, indicating a recent action with present relevance.

19. We sat in silence for a few minutes.

    • Explanation: "Sat" is the simple past tense, used for a completed action at a specific time in the past.

20. While she was washing up, she heard the doorbell and the voices.

    • Explanation: "Was washing up" indicates an ongoing action, and "heard" is the simple past tense, indicating a completed action that interrupted the ongoing action.

1) While I was waiting for him to call up, he was having a good time in the bar. 2) She wrote this exercise yesterday at 8 o'clock. 3) He invited me to the party yesterday. 4) I passed my exam in history today. 5) He read a book two days ago. 6) They saw this film last week. 7) She was painting the picture when I came. 8) I was making my report when you entered the hall. 9) They learnt the new words yesterday from three till seven. 10) It rained this week. 11) She had a bath at seven o'clock last night. 12) She has washed dishes already. 13) They were having supper when the telephone rang. 14) I haven't met you for ages. 15) Last summer he went to the Caucasus. 16) She was thoughtfully looking at him while he was reading a newspaper. 17) While I was sweeping the floor, Mrs. Parker began cooking. 18) I just had a telegram to say that my poor friend is badly ill again. 19) We sat in silence for a few minutes. 20) While she was washing up, she heard the doorbell, the voices.