单项选择题

They lost their way in the forest, and ______ made matters worse was night began to fall.

A．that
B．it
C．what
D．which
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单项选择题
Don't be so ______ to me. I'm here not to quarrel with you but to explain the whole matter to you.
A．suspicious
B．hostile
C．angry
D．hospitable
单项选择题
Those students don't have to be made ______. They are all diligent students.
A．learn
B．learned
C．learning
D．to learn
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