Ответ:
1
1. Came
2. went
3. Did
4. Thought
5. Bought
6. Knew
7. Understood
8. Wrote
2
1. Didn't play
2. Didn't come
3. Didn't see
4. Didn't go
3
Did John go to the campling last summer.
4
1. The boys went to the theatre on Saturday.
2. The girls put their books on the shelf.
3. The goats ate all the gabbages.
4. The cat climbed up the tree