单项选择题

Their happiness was very ______.

A．crisp
B．brittle
C．delicate
D．fragile
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单项选择题
He is too weak to ______ his business.
A．do with
B．do without
C．do away with
D．do up
单项选择题
No one would have time to read or listen to an account of everything ______ going on in the world.
A．it is
B．as is
C．there is
D．what is
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