giúp em nah , gấp lém ạ II. Complete the sentences :must/ might/ may/ can’t/ 1) Don't stand up in the boat! You....... fall in the river! 2) Sue says she's stuck in traffic and she........ be late. 3/ Be careful of that dog. It........ bite you 4) Tell Peter he........ stay the night here if he wants to. 5/ Accept his offer now. He...............change his mind later. 6) We're not sure but we........ go to Prague for Christmas this year. 7/ Be careful of that dog. It is staring at you. It .......... bite you at present. 8.Your son got into university. You ………. be very proud of him. 9.A: Alice's not in her room. Where is she? B: She ……..be in the kitchen. 10.A: There's someone at the door. I think it's Ben. B: It ………. be Ben. He's in New York now. 11. A: There's someone outside in a red car. B: It …………be Susie. She's the only person I know with a red car. 12.You've just had lunch. You …………………..be hungry already. 13.You've been travelling all day. You ……………… be tired. 14. Brian said he would definitely be here before 9.30. It's 10 o'clock now and he's never late. He…… be coming. 15. They haven't lived here for very long. They ………know many people.