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: The Smiths are eating less and exercising more; ..............., they can keep their weight down and stay in shape.

A. Consequently

B. also

C. nevertheless

D. otherwise

Câu 2: Mr. and Mrs. Wilson .............. some disputes with their neighbors.

A. having

B. have been having

C. have having

D. have been had

Câu 3: I .............. Michael for years.

A. have known

B. know

C. knowing

D. was known

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

A. run

B. had run

C. have run

D. have been running

Câu 5: Paul and Linda .............. us to their party last weekend.

A. was inviting

B. invited

C. had been inviting

D. will invite

Câu 6: Some people are using motorbikes for transportation; ....................., others are taking publicvehicles to get to their destination.

A. hence

B. otherwise

C. therefore

D. besides