Theo mình thì làm thế này nhé:
Bài 30:
1.went
2.drove
3.arrived/was
4.asked?had
5.said
6.told
7.walked
8.stopped/bought
9.got
10.came
11.was
12.bought
13.gave/was
14.didn't do
15.lived
16.,watched
17.were
18.weren't
19.did you spend
20.visited/was
Bài 31:
1.went
2. likes
3.ate
4. talked
5.did you have
6. speaks
7.spoke
8.carries
9.talks
10.drove
11.leaved
12.leaves
13.laughs
14.smokes
15.leave
16.taught
17.wore
18.wrote
19.gives