1) She passed me without speaking. She ___ have seen me.
could not
should
cannot
might not

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2) - Why did not your sister answer the phone?
- She ___ have been asleep.
should
must
can
might to

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3) - Why did Sarah miss meeting?
- She ___ have known about it.
should not
should
must
might not

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4) Do not phone me at eight o'clock. I ___ be watching the football match on TV.
could not
can
must
might

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5) - What time are you going?
- Well, I am ready, so I ___ go now.
could as well
must as well
ought as well
might as well

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6) She is a very nice person. You ___ meet her.
can
must
are able
have

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7) I have not phoned Ann for ages. I ___ phone her tonight.
could
must
can
have

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8) He cannot come out with us this evening. He ___ to work.
could
must
has
might

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9) I ___ get up early tomorrow, because my train leaves at 7:30.
need
may
have to
might

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10) We do not have much time. We ___ hurry.
should to
must
have
might to