10. She _______ not open the door unless she _______ who it was.

    A. will/ knew    B. will/ knows    C. would/ knew    D. does/ knows

11. If I _______ a typewriter now, I _______  this contract by myself.

    A. have/ would type        B. have/ will type                    

C. had/ would type        D. had had/ would have typed

12. Unless I _______  his address, I’d give it to you.

    A. didn’t know/ will give    B. don’t know/ would have given                C. knew/ would give        D. know/ will give

13. He _______ a lot better if he _______ more often years back.

    A. would have looked/ shaved    B. will look/ shaved                        C. looks/ shave        D. would have looked/ had shaved

14. If you_______ for lower stakes, you _______ so much.

    A. plays/ would lose         B. play/ will have been losing                C. played/ won’t lose     D. had played/ wouldn’t have lost

15. Unless he worked more slowly, he _______ so many mistakes.

    A. would make    B. will make    C. wouldn’t make    D. won’t make

16. I wouldn’t drink that wine if I_______ you.

    A. were    B. am    C. had been    D. be

17. More tourists _______ to this country unless it_______ a better climate.

    A. would come/ had        B. wouldn’t come/ had                         C. wouldn’t come/ didn’t have    D. would come/ didn’t have

18. If you _______ your car into the river, you_______ able to get out.

    A. drive/ weren’t    B. drove/ wouldn’t be C. drove/ will be    D. drive/ wouldn’t be

19. If you _______ to a union, you couldn’t get a job.

    A. don’t belong    B. are belonging    C. had belong    D. didn’t belong

20. What _______ if you found a burglar in your house?

    A. do you do    B. you do    C. would you do    D. you would do