单项选择题

A．She has to post a letter instead.
B．She has to turn down the man’’s request.
C．She’’s not sure if the computer is fixed.
D．She can’’t send the message right now.
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单项选择题
Eighteen states have enacted laws to regulate activities in wetlands.
A．Y
B．N
C．NG
单项选择题
Wetlands don’’t have any recreational, historical, scientific, and cultural values at all.
A．Y
B．N
C．NG
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