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

A. having

B. have been having

C. have having

D. have been had

Câu 1: Babies ................ when they are hungry.

A. cry

B. are crying

C. have been crying

D. cries

Câu 2: The telephone .............. ten times before Patsy finally answered it.

A. rings

B. ringing

C. had rung

D. is ringing

Câu 3: I ............... on the bus when I dropped my wallet.

A. am getting

B. get

C. have gotten

D. was getting

Câu 4: The Wagners ................ to Florida two years ago.

A. moved

B. had been moving

C. move

D. will move

Câu 5: The old drainage pipelines must be maintained; ................, leakage will be unavoidable.

A. therefore

B. similarly 

C. on the contrary

D. otherwise

Câu 6: We .............. to the baseball game when it started to rain.

A. are driving

B. drives

C. driven

D. were driving