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

A. snows

B. has been snowing

C. snowed

D. snow

Câu 1: My parents    ........... in Florida since 1999.

A. has lived

B. have lived

C. are living

D. live

Câu 2: The old drainage pipelines must be maintained; ................, leakage will be unavoidable.

A. therefore

B. similarly 

C. on the contrary

D. otherwise

Câu 3: Barbara .................. that package to you tomorrow morning.

A. deliver

B. is going to deliver

C. are going to deliver

D. delivering

Câu 4: We .............. to the baseball game when it started to rain.

A. are driving

B. drives

C. driven

D. were driving

Câu 5: We .............. since 5:00.

A. talk

B. are talking

C. talking

D. have been talking

Câu 6: The telephone .............. ten times before Patsy finally answered it.

A. rings

B. ringing

C. had rung

D. is ringing