单项选择题

They promised ______ each other when they went to work.

A．get in touch with
B．getting in touch with
C．to get in touch with
D．to get touch with
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单项选择题
I ______ come yesterday, but I could not.
A．was to have
B．must
C．ought
D．have to
单项选择题
He gained his ______ by printing ______ of famous writers.
A．wealth; work
B．wealthy; works
C．wealthy; work
D．wealth; works
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