题目内容
（请给出正确答案）
The manager wants to know if they ______ our letter yet.
A．will answer
B．answered
C．have answered
D．had answered
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A.错误
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What ______(sell) in the supermarket everyday can be reported to the manager timely through a computer.
A.错误
B.正确
A.so unusual
B.such unusual
C.such an unusual
D.so an unusual
A.look in
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D．both B and C
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