Câu hỏi: He decided ____________ another language.

A. study

B. to study

C. studying

D. studied

Câu 1: If you want to be a telephonist, you should _________ your communication skills.

A. practiced

B. practice

C. practicing

D. to practice

Câu 2: By the end of last summer, Alexander _______ his Ph.D.

A. received

B. had received

C. receive

D. are received

Câu 3: He ____________ abroad before I met him in Sydney.

A. studied

B. study

C. will study

D. had studied

Câu 4: He won't be happy if you ______ come!

A. don't

B. haven't

C. didn't

D. won't

Câu 5: If there were flying saucers, there ______ traces of their landing.

A. would be

B. will be

C. are

D. is

Câu 6: The ________ of the volcano was predicted in advance, so no one was injured.

A. eruption

B. erupted

C. erupts

D. erupt