22. You’d better come tomorrow afternoon. Tomorrow afternoon I _______(see) a friend off at the airport.

21. I ________(leave) when it began to rain.

20. Whenever he had time, he _________(help) his mother with housework.

19.If you don’t want to miss the film, you should go to the cinema ________(make) sure of the time of it.

18. Greatly ________(affect) by his son’s failure, the father was in low spirits.

17. We should _________(inform) of how the work is getting on.

16. He seemed to _________(drop) most of his friends.

15. I’m sorry I missed ________(see) you while in America.

14. He advised us _________(start) early.

13. He suggests us ________(start) early.