单项选择题

I don't know ______ it was that answered the phone this morning.

A．who
B．why
C．how
D．that
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单项选择题
The design of the gymnasium shows a great deal of ______. We have never seen a building of such a type before.
A．solidarity
B．originality
C．invention
D．fascination
单项选择题
The psychiatrist says that a person with inferiority feelings can be very ______.
A．disgraceful
B．disrespectful
C．disapproval
D．disagreeable
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