单项选择题

If you want to see a doctor, you will fix a date with him ahead of time. That is a common ______ in the US

A.A. sense
B. practice
C. rule
D. point
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The manager has got a good business ______ so the company is doing well.
A. idea
B. sense
C. thought
D. thinking
单项选择题
I can't go to the New Year's concert, ______ 100 dollars is just too much for me to spend in one evening.
A. in other words
B. that is
C. in particular
D. I mean
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