摘要：( )A. Yes,it is. B.It’s a knife. C.It’s a clock 2.( )A. It’s a crayon. B.No,it isn’t. C.Thank you. 3.( )A. OK. B.I’m sorry. C.Excuse me. 4.( )A. It’s a toy train. B. Yes,it is. C.Oh, I see. 5.( )A. Come in,please. B. Thank you. C.How are you. 6.( )A. No,it isn’t. B. Sure.Here you are. C.Thank you. 7.( )A. Thank you. B. No,it isn’t. C.Good afternoon 8.( )A. Yes,he is. B. Yes,she is. C.Yes ,it is. 9.( )A. How nice! B. Yes,it is. C.Thank you. 10.( )A. Yes,he is. B. He’s my father. C.No, it isn’t

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