单项选择题
It must have rained last night, ______ the ground is wet. ( )
- A．because
B．as
C．since
D．for
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相关考题
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单项选择题
--I can't see the blackboard very well.--Perhaps you need ______. ( )
A．examining your eyes
B．to be examined your eyes
C．to have examined your eyes
D．to have your eyes examined -
单项选择题
I have never ______ such a man. ( )
A．hear
B．hear of
C．hear from
D．heard
