

20. In the hotel, the bread and butter ……..for breakfast.
A. is served
B. are served
C. serves
D. serve
21. Neither Canada nor Mexico ……..that citizens of the United States have passports when they want to visit these countries.
A. to require
B. require
C. requires
D. requiring
22. Winning a lottery is a rare occurrence. ……..very small.
A. A number of winners are
B. The number of winners is
C. A number of winners is
D. The number of winners are
A. is served
B. are served
C. serves
D. serve
21. Neither Canada nor Mexico ……..that citizens of the United States have passports when they want to visit these countries.
A. to require
B. require
C. requires
D. requiring
22. Winning a lottery is a rare occurrence. ……..very small.
A. A number of winners are
B. The number of winners is
C. A number of winners is
D. The number of winners are