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

A. run

B. had run

C. have run

D. have been running

Câu 1: I .............. Michael for years.

A. have known

B. know

C. knowing

D. was known

Câu 2: Paul and Linda .............. us to their party last weekend.

A. was inviting

B. invited

C. had been inviting

D. will invite

Câu 3: The Wagners ................ to Florida two years ago.

A. moved

B. had been moving

C. move

D. will move

Câu 4: Some people are using motorbikes for transportation; ....................., others are taking publicvehicles to get to their destination.

A. hence

B. otherwise

C. therefore

D. besides

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: Rita .................. class every day.

A. not to attend

B. doesn’t attend

C. not attending

D. isn’t attended