单项选择题

Have you ever asked him the reason ______ may explain his absence from the class

A. why
B. when
C. thai
D. what
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Her suggestion that the company expands its business in Southeastern Asia ______ workable.
A. sounds
B. looks
C. feels
D. tastes
单项选择题
Free medical treatment in this country covers sickness of mind as well as ______ sickness.
A. normal
B. regular
C. average
D. ordinary
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