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7. If he doesn't finish his house chores, he __________ go out with friends.
may not
should not
can not
8.If Mark wants to improve his writing, he ______________ read more books.
can
may
should
9.If they want to lose weight, they ____________ eat a balanced diet.
must
may
can
10. She ______________ catch the bus if she doesn't wake up early.
may not
should not
must not
