单项选择题

"Can I go and see the dentist when I want"
"Well, usually you have to make an appointment, unless it's ______ ."

A．hurry
B．in a hurry
C．an emergency
D．haste
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单项选择题
She is so sensitive. We dare not play jokes on her ______ she should become angry.
A．unless
B．lest
C．for fear of
D．so that
单项选择题
How does the United Negro College Fund make students' dreams become tree（）

A．By giving them part-time jobs.
B．By opening an account for them.
C．By providing them with a sum of money.
D．By recommending a member college to them.
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