Câu hỏi: Little he knows about the surprise that awaited him.

A. he knows

B. about

C. the

D. awaited

Câu 1: The Great Pyramid of Giza is said to have built over a 20-year period.

A. of

B. said

C. have built

D. a

Câu 2: An ambitious person is committed to improve his or her status at work.

A. is

B. improve

C. status

D. at

Câu 3: Manufacturers may use food additives for preserving, to color, or to flavor, or to fortify foods.

A. may use

B. for preserving

C. to flavor

D. to fortify

Câu 4: For thousands of years, man has created sweet-smelling substances from wood, herbs and flowers and using them for perfumes or medicine.

A. man

B. sweet-smelling

C. using them

D. or

Câu 5: By measuring the color of a star, astronomers can tell how hot is it.

A. measuring

B. the

C. how

D. is it

Câu 6: There are many different ways of comparing the culture of one nation with those of another.

A. There are

B. of comparing

C. those

D. another