1) You _____ turn your phone on until the plane has landed. a) musn't b) don't have to 2) Here's the form. You ______ to sign it at the bottom. a) have b) musn't c) need 3) I think perhaps you _____to buy a new table. a) ought b) must c) have 4) We _____ have to leave until 13.00. a) don't b) - c) must 5) She ____ come if she doesn't want to. a) mustn't b) needn't 6) Our journey back was a nightmare. We ____to wait hours for the bus. a) have b) had 7) You _____ read his new book. You'll love it! a) should b) must c) don't have to 8) You _____to drink so many fizzy drinks. a) musn't b) oughtn't 9) Do I _____ to write a thank-you letter or can I just send an email? a) have b) need c) won't

Must,have to, need to, don't have to, should, ought to

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