练习题一、选不同类单词1.A.pleaseB.pencilC.paper2.A.dangerousB.safeC.sidewalk3.A.teachB.cookC.vet4.A.soundB.streetC.shop5.A.findB.farmerC.use二、选择题1.Do you have a knife?A.Yes,I don't.B.No,I don't.C.Yes,I am.2.A:Can I use your pen,please?B:SureA.Here you are.B.I'm using it.C.I don't have.3.It's dangerous!
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