单项选择题

He welcomed the new students and then ______ the college regulation.

A．goes on to explain
B．went on to explain
C．went on explaining
D．went on with explaining
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单项选择题
No matter how frequently, the works of Beethoven (贝多芬)always attract large audience.
A．performing
B．performed
C．to be performed
D．being performed
单项选择题
We grow all our own fruit and vegetables, ______ saves money, of course.
A．what
B．as
C．which
D．that
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