Câu hỏi: Not everyone realizes that the most largest organ of the human body is the skin.

A. not everyone

B. most largest

C. human

D. is

Câu 1: When a lion gets hungry, its manner changes and it becomes threatened.

A. when

B. its manner 

C. and

D. threatened

Câu 2: I enjoy reading the article that you told me about it yesterday.

A. reading

B. that

C. told

D. it

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

A. is

B. improve

C. status

D. at

Câu 5: It is the recommendation of many psychologists that a learner ought to use mental images to associate word and remember them.

A. recommendation

B. ought to use

C. to associate word

D. remember them

Câu 6: I clearly remember to tell you about this before.

A. clearly

B. remember

C. to tell 

D. about