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

A. run

B. had run

C. have run

D. have been running

Câu 1: The old drainage pipelines must be maintained; ................, leakage will be unavoidable.

A. therefore

B. similarly 

C. on the contrary

D. otherwise

Câu 2: I .............. Michael for years.

A. have known

B. know

C. knowing

D. was known

Câu 3: We always...................... a present to Elsa on her birthday.

A. are taking

B. taking

C. take

D. are taken

Câu 4: Rita .................. class every day.

A. not to attend

B. doesn’t attend

C. not attending

D. isn’t attended

Câu 5: Kevin can’t talk on the phone because he .............. dinner right now.

A. is eating

B. eats

C. has eaten

D. has been eating

Câu 6: I ............... on the bus when I dropped my wallet.

A. am getting

B. get

C. have gotten

D. was getting