Câu hỏi: Scientists warn that many of the world’s great cities are _______ flooding.

A. being

B. at risk

C. in danger of

D. endangered

Câu 1: They were among the first companies to exploit the ______ of the Internet.

A. potential

B. prospect

C. possibility

D. ability

Câu 2: I am not used to the cold weather here, so I need to have a heating system ______.

A. installed

B. serviced

C. developed

D. repaired

Câu 3: Mr. Simpkims is the big ______ in the company as he has just been promoted to the position of Managing Director.

A. bread

B. meat

C. cheese

D. apple

Câu 4: When I was a child, I loved to splash through the ______ after rain.

A. pools

B. puddles

C. ponds

D. rivers

Câu 5: Thanks to her father's encouragement, she has made great ______ in her study.

A. standard

B. development

C. contribution

D. progress

Câu 6: My uncle was _______ ill last summer; however, fortunately, he is now making a slow but steady recovery.

A. seriously

B. deeply

C. fatally

D. critically