To complete the sentences, you need to understand when to use the past simple and the past perfect tenses. The past simple tense is used for actions that happened at a specific time in the past, while the past perfect tense is used to show that one action was completed before another action in the past.
Our neighbour (be) really angry with us because our ball (break) his window.
- Our neighbour was really angry with us because our ball had broken his window.
Explanation: The action of breaking the window happened before the neighbour became angry, so "had broken" is in the past perfect tense, while "was" is in the past simple tense.
I (not buy) the shirt I wanted because I (spend) all my money on CDs.
- I did not buy the shirt I wanted because I had spent all my money on CDs.
Explanation: The spending of the money happened before the decision not to buy the shirt. Therefore, "had spent" is in the past perfect tense, and "did not buy" is in the past simple tense.
Jane (not be) pleased when Alex came to her party because she (not invite) him.
- Jane was not pleased when Alex came to her party because she had not invited him.
Explanation: Jane not inviting Alex happened before she realized he came to the party, so "had not invited" is in the past perfect tense, while "was not" is in the past simple tense.
I lost all my work because I (forget) to save it before the electricity (go) off!
- I lost all my work because I had forgotten to save it before the electricity went off!
Explanation: Forgetting to save the work happened before the electricity went off, which led to the loss of all the work. Therefore, "had forgotten" is in the past perfect tense, and "went" is in the past simple tense.
By using these tenses correctly, you can clearly indicate the sequence of events that took place in the past.