单项选择题

You ______ your own sandwiches. I have enough for two.

A．couldn't have brought
B．mustn't have brought
C．shouldn' t have brought
D．needn' t have brought
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单项选择题
Really, people hate ______ while the concert is going on.
A．to disturb
B．to be disturbed
C．disturbing
D．being disturbed
单项选择题
When a ship on the sea is in trouble or in danger, it will ______ a message for help to a nearby Country.
A．send off
B．send out
C．send for
D．send over
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