1) We've been invited (for, from, to) a wedding. 2) He often vitits his parents on (-, a, the) Sunday. 3) Students often

1) We\'ve been invited to a wedding.

2) He often visits his parents (-) on Sunday.

3) Students often think that exams are a nuisance.

4) When the water boils, turn off the gas, will you?

5) Ann hasn’t recovered yet. She is still in hospital.

6) When did they get married? - Last year.

7) It is still raining.

8) - Who told you about it? - A friend of mine.

9) She is the best secretary then has ever worked here.

10) We arrived ten minutes ago.

11) Have you read any of Shakespeare\'s plays?

12) Somebody is using my computer at the moment.

13) They were asking me some questions at the yesterday\'s interview.

14) She told me that you were ill.

15) It costs much to repair a car.

16) I know nothing about Economics.

17) As soon as I hear the results, I\'ll let you know.

18) Where is Stella? - She is playing tennis in the park.

19) Cats don’t like water.

20) I didn\'t understand what she meant at first.