单项选择题

With the development in science and technology man can make various flowers __________ before their time.

A．be bloomed
B．bloom
C．bloomed
D．blooming
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单项选择题
Our hopes __________ and fell in the same instant.
A．arose
B．raised
C．rose
D．aroused
单项选择题
As a public relations officer, 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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