单项选择题

I was about to leave my house （）the phone rang.

A. while
B. when
C. as
D. after

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单项选择题

—Nothing wrong with it, （） —No. Yours is a special-built model. Drive carefully, though. It takes time to run in a new car.

A. is it
B. has it
C. are they
D. is there

单项选择题

—Alice is moving to her new apartment next Saturday. —I’ll be glad to help her, （）need some help.

A. should she
B. if she will
C. if she
D. if she might

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