Put the verbs in brackets into the appropriate tense-form (только 1 задание)

1. is 2. leaves 3. have 4. does ... come 5. have lost, saw 6. have ... been 7. have ... driven 8. get 9. have ... had 10. has been 11. went 12. will go 13. will give 14. come 15. will save 16. did not understand ... does (?) does not understand ... has Mr. Smith done 17. is he speaking 18. bought 19. works 20. are you doing, am waiting