Câu hỏi: Use water sparingly and keep water clean.

A. dusty

B. dirty

C. wicked

D. halfway

Câu 1: We can do something to save the earth.

A. kick

B. shoot

C. throw

D. destroy

Câu 2: He had never experienced such rudeness towards the president as it occurred at the annual meeting in May.

A. thought

B. hostility

C. care

D. politeness

Câu 3: They don't seem particularly worried about the situation.

A. concerned

B. pleased

C. frightened

D. excited

Câu 4: There is growing concern about the way man has destroyed the environment.

A. attraction

B. worry

C. disinterest

D. careless

Câu 5: Fish only species that are not of concern, threatened or endangered.

A. educated

B. healed

C. defended

D. brought

Câu 6: It's too far to ride to your grandmother's; you'd better take the bus.

A. remote

B. near

C. fast

D. besides