Complete the sentences using
might /could, can't or must + have + past
participle.
1 Jo wasn't at school today. You___
him in the school library
this afternoon. (see)
2 I'm not sure why my sister was crying.
She-
something. (lose)
3 Layla asked for my phone number
again. She
it. (forget)
4 'Who rang the doorbell?' 'I'm waiting
for a parcel. It
postman.'
5 United were losing 7-0 after the first
half. They
the match!
(won)
(be) the
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