单项选择题

This is not the right ______to ask for my help; I am far too busy even to listen!

A．moment
B．situation
C．opportunity
D．circumstance
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单项选择题
One of the requirements for a fire is that the material _______ to its burning temperature.
A．is heated
B．will be heated
C．be heated
D．would be heated
单项选择题
Although Anne is happy with her success she wonders ______ will happen to her private life.
A．that
B．what
C．it
D．this
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