1.made

2.got

3.had

4.walked

5.didn't

6.took

7.began

8.studied

9.was

10.played

11.went

12.returned

13.worked

14.came

15.did

16.didn't difficult

17.checked

18.wrote

19.didn't browse

20.didn't have

21.had

22.looked

23.drew

24.watched

25.helped

26.went.