Câu hỏi: I can't help _____ at her mistake.

A. laugh

B. laughing

C. laughed

D. to laugh

Câu 1: They are looking forward _____ Tet holiday.

A. to have

B. having

C. to having

D. have

Câu 2: This school _____ ten years ago.

A. be built

B. is built

C. was built

D. built

Câu 3: He couldn't stand _____ for her so long.

A. to wait

B. waiting

C. wait

D. waited

Câu 4: He couldn't go far because he was afraid of _____

A. to fly

B. flying

C. be flying

D. fly

Câu 5: There is a _____ difference between the north and the south.

A. region

B. regional

C. regionally

D. regioner

Câu 6: He went to a seaside resort because he was keen on _____.

A. windsurf

B. windsurfing

C. to windsurf

D. to windsurfing