英语几道题求解关于IT的用法17.Whichsentenceiswrong?A.Ifeltitimpossibleforhimtotaketheexam.B.Ifounditimpossiblethathemighttaketheexam.C.Ithoughtthathemightnottaketheexam.D.Inmyopinionhemighttaketheexam.

　　英语几道题求解关于IT的用法

　　17.Whichsentenceiswrong?

　　A.Ifeltitimpossibleforhimtotaketheexam.

　　B.Ifounditimpossiblethathemighttaketheexam.

　　C.Ithoughtthathemightnottaketheexam.

　　D.Inmyopinionhemighttaketheexam.

　　18.Idon'tthinkdifficultforaChinesestudenttomasteraforeignlanguagewithinfiveyears

　　A.thatB.itC.tooD.very

　　19.It'sthesecondtimeyoulatethisweek.

　　A.arriveB.arrivedC.havearrivedD.hadarrived

　　20.Itwillnotbewemeetagain.

　　A.longbeforeB.beforelong

　　C.soonafterD.shortlyafter

　　这几道题我都选错了不知道是什么原因帮忙解释下吧