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

A. are

B. is

Câu 1: ................. a lot in the mountains.

A. Snows it

B. Is snowing

C. It snows

D. Snowing is

Câu 2: The ................ of dark red spots is one of the first signs of the disease.

A. appearance

B. appearing

C. appear 

Câu 3: Everyone selected to serve on this jury ............... to be willing to give up a lot of time.

A. have

B. has

Câu 4: Some of the votes ................. to have been miscounted.

A.  seem

B. seems

Câu 5: A high percentage of the population ............... voting for the new school.

A. is

B. are

Câu 6: Not only the students but also theirinstructor ............. been called

A. have

B. has