单项选择题

So urgent ______ that the doctor rode away without delay.

A．the case was
B．it was the case
C．the case being
D．was the ease
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单项选择题
Now I can manage to make myself ______ sufficiently in your language.
A．being understood
B．understood
C．to understand
D．to be understood
单项选择题
His ______ of the newspaper enabled him to make a success as a sub-editor.
A．career
B．experiment
C．profession
D．experience
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