单项选择题

He ______ another career but, at the time, he didn't have enough money to attend graduate school.

A．might have chosen
B．might choose
C．had to choose
D．must have chosen
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单项选择题
All ______ is a continuous supply of raw materials.
A．what is needed
B．thing needed
C．that is needed
D．is needed
单项选择题
A．encouragedB．insistedC．spurredD．inspired
A．encouraged
B．insisted
C．spurred
D．inspired
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