单项选择题

Mathematics ______ easy to learn.

A. is
B. are
C. can
D. feels
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单项选择题
I’d rather you ______ anything about it for the time being.
A. do
B. don’t
C. didn’t do
D. didn’t
单项选择题
I am looking forward to ______ from you as soon as possible.
A. hear
B. be hearing
C. hearing
D. have heard
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