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

A. is cleaning

B. was cleaning

C. had cleaned

D. will dean

Câu 1: We .............. to the baseball game when it started to rain.

A. are driving

B. drives

C. driven

D. were driving

Câu 2: By next month, I ...................... at this company for a year.

A. will work

B. will be working

C. will have been working

D. am going to work

Câu 3: I ................. the house before you called.

A. leave

B. am leaving

C. had left

D. had been leaving

Câu 4: Before the police arrived, the robbers ..........................

A. run

B. had run

C. have run

D. have been running

Câu 5: It ............... a lot last winter.

A. snows

B. has been snowing

C. snowed

D. snow

Câu 6: 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