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

A. cry

B. are crying

C. have been crying

D. cries

Câu 1: We ....................... in the plane for hours when it finally, took off.

A. had been sitting

B. have sat

C. will be sitting

D. will sit

Câu 2: We .............. since 5:00.

A. talk

B. are talking

C. talking

D. have been talking

Câu 3: I don't want to go outside today because it ....................

A. rain

B. rains

C. is raining

D. is rain

Câu 4: Louise was listening to the radio while she .................. the house.

A. is cleaning

B. was cleaning

C. had cleaned

D. will dean

Câu 5: I .............. Michael for years.

A. have known

B. know

C. knowing

D. was known

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

A. rings

B. ringing

C. had rung

D. is ringing