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ey must have / earn a lot of money.4 .They must be foreign.5 .He must walk too fast.6 .They may / might not be at the station.7 .He can39。t be terribly busy.8 .She may / might / could be in the organizer39。s office.9 .It may / might / could be an interesting talk.10. You may / might not be interested in the conference.Step 6 TestGive the Ss this test which practise modal verbs. Write sentences about these situations, using must / might / may / could / can39。t.1. Perhaps the theatre will be full.2. I39。m sure that necklace is valuable.3. I39。m sure the medicine isn39。t in the cupboard.4. Perhaps my neighbours are away.5. Perhaps we will have a good trip.6. I39。m sure it isn39。t made of gold.7. Perhaps his girlfriend isn39。t in the hotel.