Ex2. Past simple or past perfect?

1. Before he (mow) the lawn, he (pick) some roses.

2. When the police (arrive) at the scene, the robbers (disappear).

3. By the time he actually (find) a job, he (apply) to a number of companies.

4. After Columbus (discover) America, he (return) to Spain.

5. My sister (eat) all the biscuits before I (come) home.

6. The minister (admit) that he (take) bribes from several businesses.

7. They (go) out together for almost 10 years before they (decide) to tie the knot.

8. She (not realise) that she (not pack) her present for her aunt.

9. The teacher (ask) me whether I (stay) up late the night before.

10. He (rush) downstairs only to find that somebody (steal) his bike.

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