Câu hỏi: The boy found a wallet in the street, and then he ...... to return it to the loser.

A. tried

B. had tried

C. was trying

D. had been trying

Câu 1: Deforestation _________ destroying Earth’s plant and animal variety.

A. are

B. be

C. is

D. being

Câu 2: She glanced briefly ________ his lapel badge.

A. in

B. on

C. at

D. up

Câu 3: A hydroelectric dam ______________ in this area now.

A. is building

B. is being built

C. build

D. was built

Câu 4: It is possible for local wildlife to coexist ...... industry.

A. to

B. of

C. in

D. with

Câu 5: ……………fax transmission is commonly used in most offices.

A. A

B. An

C. The

D. x

Câu 6: The panda's ...... habitat is the bamboo forest.

A. nature

B. natural

C. naturalized

D. naturally