Câu hỏi: The campaign will hopefully ensure the survival ...... the tiger.

A. of

B. for

C. to

D. on

Câu 1: I don't remember ...... of the decision to change the company policy on vacations. When was it decided?

A. telling

B. being told

C. to tell

D. to be told

Câu 2: The waste from the chemical factory is extremely .......

A. harm

B. harmful

C. unharmed

D. harmless

Câu 3: I threw my old trainers and bought some new .................. .

A. ones

B. one

C. some

D. any

Câu 4: The leopard is _________ the threat of extinction.

A. in

B. on

C. under

D. below

Câu 5: Could you please provide us ……………..some more modern equipment?

A. for

B. by

C. in

D. with

Câu 6: Let’s _________ water by turning off tapes when not using.

A. save

B. to save

C. saving

D. saved