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
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单项选择题
I ______ the disdainful look in his eyes.
A．grumbled
B．resented
C．complained
D．dissatisfied
单项选择题
We cannot always ______ natural rainfalls. We should take some effective measures to fight drought.
A．hang on
B．hold on
C．count on
D．come on
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