单项选择题

A．Because he can’t notice the dirty.
B．Because he thinks she has the responsibility to do so.
C．Because he does not know what is dirty.
D．Because he does not know when things get dirty.
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单项选择题
A．She has done half of it already.B．She agrees that it is very long.C．They have all semester to do it.D．There’s nothing wrong with it.
A．She has done half of it already.
B．She agrees that it is very long.
C．They have all semester to do it.
D．There’s nothing wrong with it.
单项选择题
A．After having the request signed by the doctor.B．After meeting Prof. Brown.C．After talking with the Dean.D．After meeting Mr. Cheng.
A．After having the request signed by the doctor.
B．After meeting Prof. Brown.
C．After talking with the Dean.
D．After meeting Mr. Cheng.
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