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

A. clearly

B. remember

C. to tell 

D. about

Câu 1: Little he knows about the surprise that awaited him.

A. he knows

B. about

C. the

D. awaited

Câu 2: 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 3: Unlike the old one, this new copier can perform their functions in half the time.

A. unlike

B. can perform

C. their functions

D. in half the time

Câu 4: It is time the government do something to help the unemployed to find some jobs.

A. do

B. time

C. the unemployed

D. some

Câu 5: When a lion gets hungry, its manner changes and it becomes threatened.

A. when

B. its manner 

C. and

D. threatened

Câu 6: Bill is often late for class, which makes his teachers angrily.

A. Bill is often

B. for

C. which

D. angrily