单项选择题

Women workers wear hats ______ their hair gets caught in the machine.

A．if
B．in case
C．unless
D．because
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You can borrow some money from him this time but don't make a ______ of it.
A．custom
B．customs
C．habit
D．tradition
单项选择题
By the time you get back, great changes ______ in this are
A． will take placeB. are taking placeC. will have taken placeD. are to take place
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