Câu hỏi: They_________ Ho Chi Minh City last summer.

A. visit

B. will visit

C. have visit

D. visited

Câu 1: Human beings are ________ greatest threat to survival of endangered species.

A. Ø

B. an

C. the

D. a

Câu 2: Nowadays, most people rely ________ the mass media as their main source of information.

A. on

B. in

C. to

D. with

Câu 3: The first color TV _____________ in 1928.

A. produce

B. is produced

C. was produced

D. produced

Câu 4: _____ tennis is my favourite sport. I play once or twice _____ week if I can, but I'm not _____ very good player.

A. x/ a/ the

B. x/ the/ a

C. x/ a/ a

D. a/ x/ the

Câu 5: I was really impressed ………………….the beauty of Dubai.

A. on

B. in

C. to

D. by

Câu 6: Before becoming successful, Charles Kettering, former vice president of General Motors, was so poor that he has to use the hayloft of a barn as a laboratory.

A. as

B. so poor

C. has to

D. successful