单项选择题

He works in a sports centre instructing people in the use of the gym equipment.

A. helping
B. teaching
C. informing
D. ordering
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John is crazy about pop music.
A. mad
B. sorry
C. concerned
D. worried
单项选择题
We had a very awful earthquake here last year.
A. light
B. terrible
C. slight
D. obvious
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