Unit7SectionB(3a-self-check)I.单选()l.I'mnot______abooklikethis.A.watchingB.lookingatC.seeingD.reading()2.It'sverycoldtoday.You'dbetterput_______yourcoatwhenyougoout.A.awayB.downC.onD.up()3.Don't_____onthestreet,Tom.A.playB.playingC.playsD.isplaying()4.Listen!Who______inthenextroom?A.singB.singsC.singingD.issinging()5.--WecanuseMSNto________witheachotheronthenet.--Really?Willyoushowmehowtouseit?.speakB.talkC.sayD.tell()6._______yourrainc...