Câu hỏi: 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 1: The governor, with his wife and children, are at home watching the election results on TV.

A. his

B. are

C. watching 

D. on TV

Câu 2: By measuring the color of a star, astronomers can tell how hot is it.

A. measuring

B. the

C. how

D. is it

Câu 3: 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 4: An ambitious person is committed to improve his or her status at work.

A. is

B. improve

C. status

D. at

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: Little he knows about the surprise that awaited him.

A. he knows

B. about

C. the

D. awaited