单项选择题

It is essential that you ______ your study habits if you expect to do well in college.

A．changed
B．change
C．changing
D．will change
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单项选择题
Although most dreams apparently happen ______ , dream activity may be provoked by external influence.
A．spontaneously
B．simultaneously
C．homogeneously
D．instantaneously
单项选择题
There are not many teachers who are strong ______ of traditional methods in English teaching.
A．sponsors
B．contributors
C．advocates
D．performers
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