Câu hỏi: 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

Câu 1: The view is great, _______?

A. isn't it

B. was it

C. doesn't it

D. did it

Câu 2: I was really impressed ………………….the beauty of Dubai.

A. on

B. in

C. to

D. by

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

A. Ø

B. an

C. the

D. a

Câu 5: Air pollution, together with littering, are causing many problems in our large, industrial cities today.

A. are

B. industrial

C. problems

D. with

Câu 6: In an essay writing in 1779, Judith Sargeant Murray promoted the cause of women's education.

A. the cause of

B. writing

C. In an essay

D. women's education