单项选择题


A．retaining
B．settling
C．maintaining
D．preserving
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单项选择题
A．painfullyB．pleasantlyC．exceedinglyD．willingly
A．painfully
B．pleasantly
C．exceedingly
D．willingly
单项选择题
A．IfB．BecauseC．AlthoughD．While
A．If
B．Because
C．Although
D．While
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