Поставьте глаголы в отрицательной или утвердительной форме в present perfect или в past simpli (indefinite). Обратите внимание на употребление обстоятельств времени:

1. didn't see
2. haven't seen
3. didn't do
4. haven't done
5. didn't drive
6. haven't driven
7. didn't invite
8. have invited
9. didn't buy
10. have bought
11. didn't go
12. haven't been