单项选择题

I don't know him very well，______I have met him socially on a couple of occasions．

A．so that
B．when
C．although
D．since
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单项选择题
I didn't do as ______ I did yesterday.
A．badly today as
B．bad today as
C．badly as today
D．bad as today
单项选择题
The teacher had the monitor ______ the papers.
A．to hand out
B．hand out
C．hand down
D．to hand down
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