单项选择题

It may be worthwhile at this moment to ______ and see what results we have got after one year's experiments.

A. look back
B. look around
C. look up
D. look forward
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单项选择题
In the dark street, there was not a single person ______ she could turn for help.
A. that
B. who
C. from whom
D. to whom
单项选择题
The government is trying to do something to ______ better understanding between the two countries.
A. raise
B. promote
C. rise
D. develop
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