Câu hỏi: Babies ................ when they are hungry.

A. cry

B. are crying

C. have been crying

D. cries

Câu 1: It ............... a lot last winter.

A. snows

B. has been snowing

C. snowed

D. snow

Câu 2: The Wagners ................ to Florida two years ago.

A. moved

B. had been moving

C. move

D. will move

Câu 3: The old drainage pipelines must be maintained; ................, leakage will be unavoidable.

A. therefore

B. similarly 

C. on the contrary

D. otherwise

Câu 4: The new project received a lot of financial assistance from the WTO; ..............., it could easilybe approved by the authority.

A. thus

B. on the other hand

C. on the contrary

D. inaddition

Câu 5: Mr. and Mrs. Wilson .............. some disputes with their neighbors.

A. having

B. have been having

C. have having

D. have been had

Câu 6: We .............. since 5:00.

A. talk

B. are talking

C. talking

D. have been talking