Răspuns: 1.did
2.didn't use
3.didn't chew
4.Did she explain
5/6.wrote/gave
7/8.didn't like/bought
9.Did/bark
10/11.walked/couldn't
12.went
13.Did/go
14/15. Caught/wanted
16/17. drank/ate
18. paid
19.wrote
20.found