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

A. leave

B. am leaving

C. had left

D. had been leaving

Câu 1: Before the police arrived, the robbers ..........................

A. run

B. had run

C. have run

D. have been running

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

A. moved

B. had been moving

C. move

D. will move

Câu 4: Annette spent a year long to search for scholarship; ................, she did not get positive result.

A. therefore

B. moreover

C. still

D. asa result

Câu 5: The store ..................... two sales so far this year.

A. is having

B. has been having

C. has

D. has had

Câu 6: Kevin can’t talk on the phone because he .............. dinner right now.

A. is eating

B. eats

C. has eaten

D. has been eating