单项选择题

That was so serious a matter that I had no choice but ______ the police.

A. called in
B. calling in
C. call in
D. to call m
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单项选择题
The most important ______ of his speech was that we Should all work whole-heartedly for the people.
A. element
B. spot
C. sense
D. point
单项选择题
I remember her face but I cannot ______ where I met her.
A. recall
B. remind
C. remember
D. remark
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