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

1. didn't see2. haven't seen3. didn't do4. haven't done5. didn't drive6. haven't driven7. didn't invite8. have invited9. didn't buy10. have bought11. didn't go12. haven't been