Put in the correct form of the verbs:
1.Mrs.Green (take)....................Alice to the dentist many times.
2.My sister always (wash).....................her hands before meals.
3.Hurry up!The train (come).................in.
4.I hope it (not rain)...................in the dry season.
5.He (sleep)........................so he didn't understand what you said.
6.Will you wait a minute while i (look).......................through the text?
7.You must tell me what you (do)........................since i last saw you.
8.An economic critic often (follow)..................the war.
9.You (witness)...........................many things by the time you die.
10.So far you (make)................no mistakes on this exercise.
11.What you (do).................at 7 p.m yesterday?
12.We didn't recognize him.He (change)...................a lot.
13.He discovered to his horror that he (eat).................a fly.
14.Where you (spend).................your holiday last year?
15.He (do).......................nothing before he saw me.
16.All of them (sing)...................when i came.
17.She constantly (invite)........................me to lunch and dine with her once or twice a year.
18.They had sold all the books when we (get)............there.
19.Why didn't you listen while i (speak)...................to you.
20.Where are you?-I'm upstairs.I (have)................a bath.