Câu hỏi: The United States has a ............. of around 250 million.

A. seperation

B. population

C. addition

D. introduction

Câu 1: They _____ sacrifices so that their only child could have a good education.

A. made

B. did

C. provided

D. lent

Câu 2: Mr. Bao said, “I am so...............of having been a Dien Bien Phu soldier.”

A. interested

B. excited

C. proud

D. keen

Câu 3: It is not easy at all to get a good job without any __________ qualifications.

A. academic

B. social

C. great

D. favourite

Câu 4: If people stop using ________ for fishing, a lot of sea creatures will be preserved.

A. pesticides

B. dynamite

C. garbage

D. resources

Câu 5: At the _______ level, you can join three-year or four-year colleges.

A. primary

B. secondary

C. postgraduate

D. undergraduate

Câu 6: Many people were injured when the building..........

A. collapsed

B. destroyed

C. struck

D. erupted