单项选择题

A．and
B．or
C．also
D．yet
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单项选择题
A．requirementsB．guidesC．instructionsD．manuals
A．requirements
B．guides
C．instructions
D．manuals
单项选择题
A．Visiting the Brownings.B．Writing a postcard.C．Looking for a postcard.D．Filling in a form.
A．Visiting the Brownings.
B．Writing a postcard.
C．Looking for a postcard.
D．Filling in a form.
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