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

A. harm

B. harmful

C. unharmed

D. harmless

Câu 1: 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 2: I threw my old trainers and bought some new .................. .

A. ones

B. one

C. some

D. any

Câu 3: I would like to send these letters …………………..air mail.

A. in

B. with

C. by

D. over

Câu 4: I was ...... to find that the film was quite ……

A. surprised - frightening

B. surprised - frightened

C. surprising - frightening

D. surprising – frightened

Câu 5: The two children blamed each other ...... the window.

A. to break

B. breaking

C. for breaking

D. having broken

Câu 6: ……………fax transmission is commonly used in most offices.

A. A

B. An

C. The

D. x