单项选择题

The stone steps up to the mountain temple had been worn () by centuries of visitors from every part of the world.

A. smooth
B. smoothly
C. old
D. broken

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My business brings ()such a big sum of 200,000 yuan for the Hope Project .

A. in
B. about
C. out
D. back
单项选择题
They are () for their son to succeed in the game.

A. anxious
B. worried
C. sorry
D. hunger
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