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

A. was inviting

B. invited

C. had been inviting

D. will invite

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

A. have known

B. know

C. knowing

D. was known

Câu 2: Before the police arrived, the robbers ..........................

A. run

B. had run

C. have run

D. have been running

Câu 3: My parents    ........... in Florida since 1999.

A. has lived

B. have lived

C. are living

D. live

Câu 4: The old drainage pipelines must be maintained; ................, leakage will be unavoidable.

A. therefore

B. similarly 

C. on the contrary

D. otherwise

Câu 5: The new project received a lot of financial assistance from the WTO; ..............., it could easilybe approved by the authority.

A. thus

B. on the other hand

C. on the contrary

D. inaddition

Câu 6: We always...................... a present to Elsa on her birthday.

A. are taking

B. taking

C. take

D. are taken