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

A. leave

B. am leaving

C. had left

D. had been leaving

Câu 1: The Wagners ................ to Florida two years ago.

A. moved

B. had been moving

C. move

D. will move

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: Many ads do give important information about products; ....................., some of them are merelyhumorous or foolish.

A. furthermore

B. however

C. consequently

D. at the same time

Câu 4: The store ..................... two sales so far this year.

A. is having

B. has been having

C. has

D. has had

Câu 5: 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 6: The old drainage pipelines must be maintained; ................, leakage will be unavoidable.

A. therefore

B. similarly 

C. on the contrary

D. otherwise