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

A. Ø

B. an

C. the

D. a

Câu 1: The first color TV _____________ in 1928.

A. produce

B. is produced

C. was produced

D. produced

Câu 2: Air pollution, together with littering, are causing many problems in our large, industrial cities today.

A. are

B. industrial

C. problems

D. with

Câu 3: He is very keen______ English, but he is not good ______ listening.

A. on/ at

B. on/ in

C. at/ on

D. at/ at

Câu 4: I was really impressed ………………….the beauty of Dubai.

A. on

B. in

C. to

D. by

Câu 5: Nowadays, most people rely ________ the mass media as their main source of information.

A. on

B. in

C. to

D. with

Câu 6: _____ 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