1b
2b
3d
4a
5c
6a
7d
8b
9c
10a
11a
12d
13d
14c
15a
16b
17b
18d
19c
20c
21c
1 had examined
2 remembered, had left
3 were, had passed
4 lay, had left
5 opened, looked, tried , had happened
6 saw, had traveled
7 came, had returned
8 visited, had lived
9 entred, had already begun
10 told, had received
11 had you worked , went
12 had known , visited
13 said, had got
14 wanted, had organized
15 didn't know, had attacked
16 was, had found
17 remembered, hadn't rung
18 reached, had made
19 had left , hurried
20 though, had quarreled
2.No,she didn't.She painting a flower
3.No she didn't.She visited the zoo
4.No she didn't.She washed her bike
5.No she didn't.She danced with Grandma yesterday.
<span>a. have
.................</span>
1.Had the pupils translated the text before the bell rang? The pupils hadn't translated the text before the bell rang.2.Had Kate done her lessons by eight o'clock?Kate hadn't done her lessons by eight o'clock.3.Had Peter studied English before he entered the institute?Peter hadn't studied English before he entered the institute.4.Had the girls cleaned the room by the time their mother came back.The girls hadn't cleaned the room by the time their mother came back.5.Had we reached the village before the sun set.We hadn't reached the village before the sun set.