IV. Употребите Present Perfect или Past Perfect:

10. We (to finish) our test by that time. 11. You (to finish) your work? 12. I didn't want to see the film because I (to see) it on TV. 13. We (to wait) for an hour but they never came. 14. Since what time he (to sleep)? 15. By the time he was twelve, he (to be able) to speak two foreign languages. 16. By the time the police came the robbers (to manage) to escape. 17. How long your club (to be) in existence? 18. Her daughter (not to return) home by eleven. 19. It (to snow) since last night, it's not safe to drive. 20. She (to make) already coffee by the time her son got up.

We had finished our test by that time. 11. Have You finished your work? 12. I didn't want to see the film because I have seen it on TV. 13. We had waited for an hour but they never came. 14. Since what time has he  slept? 15. By the time he was twelve, he had been able to speak two foreign languages. 16. By the time the police came the robbers  had managed to escape. 17. How long have your club been in existence? 18. Her daughter had not returned home by eleven. 19. It has snowed since last night, it's not safe to drive. 20. She  had already made coffee by the time her son got up.