单项选择题

All _______ is a continuous supple of raw materials.

A．what is needed
B．thing needed
C．that is needed
D．is needed
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单项选择题
What do we learn about prisoners in Britain
A．They are encouraged to do maintenance for the training centre.
B．Most of them get paid for their work.
C．They have to cook their own meals.
D．They can choose to do community work.
单项选择题
We can infer from the conversation that the man is a(n)_______.
A．plumber.
B．construction worker.
C．office boy.
D．porter.
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