Câu hỏi: It is not easy to ________ our beauty when we get older and older.

A. develop

B. maintain

C. gain

D. collect

Câu 1: _______ is the study of the Earth's physical features and the people, plants, and animals that live in different regions of the world.

A. Science

B. Geography

C. History

D. Technology

Câu 2: I put your keys in the drawer _______ they cannot get lost.

A. because

B. let alone

C. instead of

D. so that

Câu 3: The ______ to success is to be ready from the start.

A. key

B. response

C. agreement

D. demand

Câu 4: Socially, the married _______ is thought to be the basic unit of society.

A. couple

B. pair

C. twins

D. double

Câu 5: Many young people have objected to _______ marriage, which is decided by the parents of the bride and groom.

A. agreed

B. shared

C. contractual

D. sacrificed

Câu 6: He was very respectful at home and _______ to his parents.

A.  responsible

B. caring

C. obedient

D. lovely