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

A. Ø

B. an

C. the

D. a

Câu 1: It was hot, _________ I turned on the conditioner.

A. however

B. but

C. because

D. so

Câu 2: The view is great, _______?

A. isn't it

B. was it

C. doesn't it

D. did it

Câu 3: I was really impressed ………………….the beauty of Dubai.

A. on

B. in

C. to

D. by

Câu 4: Josh would never forget ________ by his parent through no fault of his own.

A. having scold

B. to have scolded

C. to be scolded

D.  being scolded

Câu 5: Mike came across his old friend - Maria while he _______ along the street.

A. had walked

B. would walk

C. was walking

D. walked

Câu 6: Nowadays, most people rely ________ the mass media as their main source of information.

A. on

B. in

C. to

D. with