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
Her jewelry ______ under the spotlights and she became the dominant figure at the bail.
A．blazed
B．dazzled
C．glared
D．glittered
单项选择题
The millions of calculations involved, had they been done by hand, ______ all practical value by the time they were finished.
A．had lost
B．would have lost
C．would lose
D．should have lost
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