问题
选择题
The head teacher comes to the classroom ______ to see if the students are quiet.
A．here and there
B．now and then
C．sooner or later
D．here and now
答案
答案：B
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The head teacher comes to the classroom ______ to see if the students are quiet.
A．here and there
B．now and then
C．sooner or later
D．here and now
答案：B