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

A. in

B. on

C. under

D. below

Câu 1: Laura reminded her roommate ...... her alarm clock for 6:00.

A. to set

B. setting

C. to be set

D. of setting

Câu 2: The two children blamed each other ...... the window.

A. to break

B. breaking

C. for breaking

D. having broken

Câu 3: 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 4: The film _______ by the time we ________ to the cinema.

A. already began - got

B. have already begun - got

C. had already begun - got

D. already began - had got

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

A. A

B. An

C. The

D. x

Câu 6: I would like to send these letters …………………..air mail.

A. in

B. with

C. by

D. over