单项选择题

As a public relations officex, he is said ______ some very influential people.

A．to know
B．to be knowing
C．to have been knowing
D．to have known
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单项选择题
Rod is determined to get a seat for the concert ______ it means standing in a queue all night.
A．as if
B．even if
C．provided
D．whatever
单项选择题
Things might have been much worse ff the mother______ on her right to keep the baby.
A．has been insisting
B．had insisted
C．would insist
D．insisted
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