Câu hỏi: 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 1: Many languages used around the world they do not have a form of writing.

A. used

B. around

C. they

D. a form of writing

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: The bus was plenty of people who had spent many a happy hour shopping at the new.

A. plenty of

B. who

C. many a happy hour

D. shopping

Câu 4: 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

Câu 5: Bill is often late for class, which makes his teachers angrily.

A. Bill is often

B. for

C. which

D. angrily

Câu 6: I was very busy lately since the project of designing the new collection started.

A. was

B. since

C. the project

D. the new collection