Câu hỏi: ______________used to be the highest building in the world, is now still a popular tourist attraction.

A. It is The Empire State Building, which

B. The Empire State Building

C. The Empire State Building, that

D. The Empire State Building, which

Câu 1: “_____________,” my father advised me.

A. It is my duty to work harder

B. I would rather work harder

C. You ought to work harder

D. It is worth working harder

Câu 2: There is __________the environment is more and more polluted.

A. predict

B. no belief that

C. no doubt that

D. undoubt

Câu 3: It was in the 1970’s _________ many new rights and freedoms had been gained.

A. that

B. that

C. when

D. in which

Câu 4: New York is a place _________ people of many different cultures live and work together.

A. which

B. where

C. that

D. in that

Câu 5: That old worker is living on his retirement ________.

A. pension

B. salary

C. service

D. mission

Câu 6: The host asked Peter __________tea or coffee.

A. if he prefers

B. whether he preferred

C. that he preferred

D. did he preferred