Câu hỏi: Carlos is the only one of thosestudents who       ............. lived up to thepotential described in the yearbook.

A. has

B. have

Câu 1: Not only the students but also theirinstructor ............. been called

A. have

B. has

Câu 2: A large number of voters still ............... along straight-party lines.

A. votes

B. vote

Câu 3: The tornadoes that tear through this county every spring ............ more than just a nuisance.

A. are

B. is

Câu 4: Sarah and her husband ................. the movies last Saturday.

A. Was going

B. went to

C. they went

D. went they to

Câu 5: The ................ of dark red spots is one of the first signs of the disease.

A. appearance

B. appearing

C. appear 

Câu 6: Politics .................. sometimes a dirtybusiness.

A. are

B. is