单项选择题

When we are in a social gathering, we must be aware of the () that govern the way things are going to proceed. They are technically called schema (schemas).

A、stories and anecdotes
B、goals and objectives
C、signs and gestures
D、rules and procedures
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Does the bill ()a tip?
A. contain
B. include
C. contained
D. included
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I intended to( )him, but I forgot to do so.
A. have invited
B. invited
C. invite
D. be inviting
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