【请帮我做些英语题目吧?谢谢Directions:Foreachofthefollowingsentences,therearefourchoicesmarkedA,B,CandD.Choosetheoneanswerthatbestcompletesthesentence.21.________,hewouldbeabletofeedhimselfandhelphisfa】

　　请帮我做些英语题目吧?谢谢

　　Directions:Foreachofthefollowingsentences,therearefourchoicesmarkedA,B,CandD.Choosetheoneanswerthatbestcompletesthesentence.

　　21.________,hewouldbeabletofeedhimselfandhelphisfamily.

　　A.WithoutsteadywagesB.Haven’tsteadywagesC.WithsteadywagesD.Havesteadywages,

　　22.Youbuysomereferencebookswhenyougotocollege.

　　A.couldB.willhaveto

　　C.musttoD.might

　　23.Hedidn'tpassthefinalexamination.Heit.

　　A.musthavepreparedfor

　　B.oughttopreparefor

　　C.oughttohavepreparedfor

　　D.musttopreparefor

　　24.John'sfathermathematicsinthisschooleversincehegraduatedfromHarvardUniversity.

　　A.taughtB.teachesC.hastaughtD.isteaching

　　25._____isnecessarytogetupearlytocatchthetrainat7a.m.tomorrow..

　　A.ThatB.ItC.WhatD.This

　　26.Neithertheteachernorthestudents_______intheexperiment.

　　A.hassucceededB.havesucceededC.hasachievedD.haveachieved

　　27.Ayoungwomenwascomingtowardme,_________________.

　　A.hadlongandslimfigureB.herfigureislongandslim

　　C.herfigurewaslongandslimD.herfigurelongandslim

　　28.Silveristhebestconductorofelectricity,copperitclosely.

　　A.followedB.tofollowC.followingD.beingfollowing

　　29.IwillletMrBlacktellyou___________.

　　A.whathashappenedtohim

　　B.whathadhappenedtohim

　　C.thathashappenedtohim

　　D.thathadhappenedtohim

　　30.Helookedforthegirlwhoseheartheknew,but________facehedidn’t.

　　A.herB.theC.whoseD.his