单项选择题

I ______ have written to him because he phoned me shortly afterwards.

A．ought to
B．must
C．couldn't
D．needn't
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单项选择题
The British are not so familiar with different cultures and other ways of doing things, is often the case in other countries.
A．so
B．as
C．that
D．it
单项选择题
--Would you like to go picnicking with us today-- ______,but it looks like rain.
A．Yes, I would like
B．I'm going to
C．Sorry, I don't want to
D．Well, I'd like to
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