单项选择题

Johnny, you______play with the knife. You______hurt yourself.

A．won’t; can’t
B．mustn’t; may
C．shouldn’t; must
D．can’t; shouldn’t
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单项选择题
The number of people invited______fifty, but a number of them______absent for different reasons.
A．were; was
B．was; was
C．was; were
D．were; were
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