名词性从句单项.docx

主语从句练习单项选择题1. _____?as?much?as?one-fifth?of?all?timber?harvested?is?not?used.A.?The?estimate????????????????B.?The?estimate????C.?They?are?estimated???????D.?It?is?estimated?that2.?_____?was once regarded as impossible has now become a reality.???A.?That?????B.?Which??????C.?Who????D.?What?3.?_____?we?have?achieved?is?attributed?to?the?guidance?of?our?parents.???A.?Whoever?????B.?Whatever?????C.?However??????D.?That?4.?_____?you say now can’t make up for what you’ve done. ???A.?No matter????B.?Whatever? C.?However????D.?That5.?Although?_____?happened?in?this?developed?country?sounds?like?science?fiction,?it?could?occur?elsewhere?in?the?world.???A.?which???????B.?what???????C.?how?????D.?it6.?_____?she?had?forgotten?to?take?her?notebook.???A.?That?occurred?to?her???????????B.?She?occurred?that?????C.?To?her?that?occurred???????????D.?It?occurred?to?her?that7.?I?am?sure?that?_____?she?said?is?wrong.???A.?which???????B.?all???????C.?this?????D.?what8.?We?lost?our?way?in?the?forest,?and?_____?made?matters?worse?was?that?it?was?getting?dark.??A.?that??????B.?which????C.?it?????D.?what9.?_____?occurred to him that he had forgotten to lock the door when he left home.??A.?This????B.?It?????C.?That????D.?These10.?_____?or?not?is?still?uncertain.??A.?He’s?coming???????????B.?If?he?is?coming?????C.?That?coming?????????????D.?Whether?he’s?coming11.?It’s?_____?he’ll?be?able?to?come.??A.?doubt?whether??B.?doubtfulC.?doubt?it????D.?doubtful?whether?12.?It is _____ that the bridge has existed for more than three centuries?.??A.?appeared??????B.?risen?????C.?said??????D.?born13.?_____?he?saw?both?surprised?and?frightened?him.??A.?That?????????B.?When???????C.?What???????D.?Which14.?_____?is?a?spell?of?warm?sunshine.??A.?What?do?we?all?need.??????? B.?What?all?we?need????C.?What?we?need????????????????D.?What?we?all?need15.?_____?is?a?pity?that?he?should?feel?so?upset.???A.?What??????B.?That?????C.?He?????D.?It16.?_____?a?spoonful?of?soil?can?tell?us?so?much?about?the?structure?and?