单项选择题

This project is known to ______ for three months.

A. having been going on
B. go on
C. have been going on
D. be going on
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单项选择题
When the idea of winning in sports is carried to excess, ______ competition can turn into disorder and violence.
A. honestly
B. honest
C. honorable
D. honorary
单项选择题
The growing size of the population is ______ major concern of ______ society nowadays.
A./; the
B. a; /
C. a; the
D. the; the
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