单项选择题


A．hold
B．to hold
C．holding
D．held
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单项选择题
A．ForB．AsC．WhileD．When
A．For
B．As
C．While
D．When
单项选择题
A．supposeB．to supposeC．supposedD．supposing
A．suppose
B．to suppose
C．supposed
D．supposing
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