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It would be a good idea for you to see a debt counsellor. OUGHT
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It's not necessary for them to arrive before 8.30. HAVE
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i'm sure that isn't Mark who is talking to Jane as he's in London.    BE
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You ought to bring an umbrella today in case it rains. HAD
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it's possible that Mark will be absent from today's class . MAY.
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Jane is not answering her phone. perhaps she is having a meeting. MAY
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Passengers are not allowed to bring pets on the plane. MUST
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IT's impossible for that to be a Johny. He's abroad. CAN'T
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Ai tra loi nhanh nhat va dung cho 5* (gap a)