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