一、1.B 2.C 3.C 4.D 5.D
二、1.have to 2.could 3.Can 4.needn't 5.May 6.may 7.must 8.Can 9.can't 10.don't have to
三、1.Can 2.must 3.can't 4.may 5.mustn't 6.don't have to
四、1.can't run 2.Must wear；Yes；you must 3.No,you couldn't 4.don't have 5.have to 6.When was；draw
五、1.can play 2.must walk 3.can't play；have to 4.May talk 5.have to stay 6.don't must 7.Can；tell 8.is may
兄弟啊，你在线等，我也是在线做的，不采纳我就伤心了。
有问题可以继续跟我交流，如果没有就采纳吧~~~~~
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