精读三作业41.Hesuddenlysawawaterfall.Itwasanimpressivesight:thewaterseemed____straightoutoftheclouds.a.todropb.droppedc.tobedroppingd.tohavedropped2.Heintended____anaccuratecalculationlastweek.a.tomakeb.tobemad
精读三作业4
1.Hesuddenlysawawaterfall.Itwasanimpressivesight:thewaterseemed____straightoutoftheclouds.
a.todropb.droppedc.tobedroppingd.tohavedropped
2.Heintended____anaccuratecalculationlastweek.
a.tomakeb.tobemadec.tohavebeenmaded.tohavemade
3.Iamsorryto____thebookforsuchalongtime.
a.keepb.hadkeptc.havekeptd.havingkept
4.Theyappear____intheaccident.
a.wasinjuredb.tohavebeeninjuredc.toinjured.beinginjured
5.Sheseemed____aboutitalready.
a.hearb.hearingc.toheard.tohaveheard
6.Youseen____yourhealth.
a.torecoverb.toberecoveringc.haverecoveredd.recovered
7.Thenextthing____istooilthemachine.
a.tobedoneb.tobedoingc.dod.willbedone
8.Theoldmanissaid____averypoormanwhenhewasyoung.
a.tobeb.hewasc.tohavebeendhavingbeen
9.Thegasseems____veryquickly.
a.havingexpandedb.tohavebeenexpanding
c.tohaveexpandedd.toexpand
10.Theresearchwasknown____forover20years.
a.tobegoingonb.tohavebeengoingonc.tohavegoneond.togoon
11.Theywereglad____somethingforthepeople.
a.tohavedoneb.tohavedoingc.tobedoned.tohavebeendone
12.Heasked____re-electedsincehehadbeenchairmanforsevenyears.
a.nottohavebeenb.nottobec.tobenotd.tohavenotbeen
13.Thesatelliteisalwaysescapingfromtheearth____backbygravitythesamedistanceithasescaped.
a.topullb.tohavebeenpulledc.onlytobepulledd.onlybeingpulled
14.Muchresearchinthisfieldremains____.
a.todob.doingc.tobedoned.tohavebeendone
15.Inorder____intospace,agreatforceisneededtoovercometheforceofgravity.
a.asatellitetolaunchb.forasatellitetobelaunched
c.forsatellitetobelaunchingd.toasatelliteislaunched
16.Thechildpretended____whathispatentsweresaying.
a.tobenotlisteningtob.tobelisteningnotto
c.tonotbelisteningtod.nottobelisteningto
17.Thefirstaeroplaneissaid____