单项选择题

A．why
B．how
C．if
D．what
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单项选择题
A．weightB．amountC．degreeD．quality
A．weight
B．amount
C．degree
D．quality
单项选择题
A．taking upB．trying onC．getting overD．doing with
A．taking up
B．trying on
C．getting over
D．doing with
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