单项选择题

I had been working a couple of months ______ I had a letter from Mike.

A．when
B．until
C．that
D．while
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单项选择题
Tom ought not to ______ me your secret, but he means no harm.
A．have told
B．tell
C．be telling
D．having told
单项选择题
Readers can ______ quite well without knowing the exact meaning of each word.
A．get over
B．get in
C．get along
D．get through
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