单项选择题


A．encouragement
B．intercourse
C．investment
D．involvement
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单项选择题
A．whenB．thatC．whereD．because
A．when
B．that
C．where
D．because
单项选择题
A．thinkingB．supposingC．supposeD．given
A．thinking
B．supposing
C．suppose
D．given
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