单项选择题

A great deal has been done to better the situation.

A. change
B. improve
C. assess
D. harm
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单项选择题
The governor gave a rather determined explanation to the public.
A. unclear
B. firm
C. short
D. vague
单项选择题
The new students were surprised by what they saw on campus.
A. moved
B. touched
C. shocked
D. worried
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