【一、用所给动词的适当形式填空.Jim,togetherwithhisclassmates,______(play)tabletennisnow.LastSundaymorning,ididnotingbut______(write)alettertomygrandma.Whenthetraffic______(stop),youcancrosstheroad.Theyneeded_____】

　　一、用所给动词的适当形式填空.

　　Jim,togetherwithhisclassmates,______(play)tabletennisnow.

　　LastSundaymorning,ididnotingbut______(write)alettertomygrandma.

　　Whenthetraffic______(stop),youcancrosstheroad.

　　Theyneeded______(climb)thetreewithaladder.

　　一、单项选择.

　　( )1.Tigersliveasafamily______babytigersare2-3yearsold.

　　A.and B.but C.or D.until

　　( )2.Ifidon'tbuythem,______willbuythem.

　　A.elsesomeone B.elseanyone C.someoneelse D.anyoneelse

　　( )3.It isverydifficult______giantpandas______inthewild.

　　A.of,tosurvive B.for,tosurvive C.for,surviving D.of,surviving

　　( )4.Iwon'tbelievethat hecandoit______iseeitwithmyowneyes.

　　A.until B.after C.when D.if