单项选择题

We consider _____ the machine should be adjusted each time it is used .

A．that it necessary
B．necessary it that
C．it that necessary
D．it necessary that
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单项选择题
He _____ by his sister at that moment.
A．happened to see
B．was happened to see
C．was happened to be seen
D．happened to be seen
单项选择题
Your children must stop me by asking for candy all day long. I am _____ every day by the slow bus service in this town .
A．annoyed; annoying
B．to annoy; annoying
C．annoying; annoying
D．annoying; annoyed
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