单项选择题

That job is quite difficult. I can understand why you have () so many problems.

A. run for
B. run over
C. run off
D. run into

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I'm not leaving()I get an apology from you.

A. so that
B. as long as
C. while
D. until
单项选择题
Our maths teacher is a man whom everyone looks()

A. up
B. up to
C. on
D. in
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