单项选择题

He will tell us why he feels so strong that each of us has a role______in malting the earth a better place to live on.

A．to have played
B．to play
C．to be played
D．to be playing
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单项选择题
—I was told that Jack had a car accident yesterday.—I believe not. He______.
A．shouldn't have been so careless
B．wouldn't be so careless
C．couldn't be so careless
D．mustn't be so careless
单项选择题
—Have you seen______school bag I put it here just now.—Is it______red one
A．a, the
B．a, a
C．the, the
D．the, a
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