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1.Peoplehaveproved_________tobetruethattheheatwegetfromcoalandoilcomesfromthesun.
A.that
B.it
C.this
D./
【答案及解析】答案选B。it是形式宾语，that从句是真正的宾语。
2.Idon’tthink________possibletomasteraforeignlanguagewithoutmuchmemorywork.
A.it
B.that
C.this
D.those
【答案及解析】答案选A。
3."Wereallthreepeopleinthecarinjuredintheaccident？"
"No，______onlythetwopassengerswhogothurt."
A.itwas
B.thereis
C.itwere
D.therewas
【答案及解析】答案选A。强调句
4.__________herealizeditwastoolatetoreturnhome.
A.Nosooneritgrewdarkthan
B.Hardlyitgrewdarkwhen
C.Itwasnotuntildarkthat
D.Scarcelyitgrewdarkwhen
【答案及解析】答案选D。nosonnerthan=assoonas一……就……,scarcelywhen=assoonas,hardlywhen=assoonas
5.Itwasnotuntilshearrivedinclass________realizedshehadforgottenherbook.
A.and
B.whenshe
C.she
D.thatshe
【答案及解析】答案选D。notuntil直到……才
6.Itwas______whoarrivedtherefirst，despiteourdetour（绕路）。
A.us
B.we
C.our
D.ours
【答案及解析】答案选B。
7.Itwas_______thenextmorningthatKuntabegantothinkaboutwherehewasgoing.
A.after
B.before
C.when
D.notuntil
【答案及解析】答案选D。after在……之后,before在……之前,when当……时候,notuntil直到……才
8.Itwas_______hegotamapthathestartedonhisaway.
A.until
B.till
C.notuntil
D.nottill
【答案及解析】答案选C。until直到,till直到,notuntil直到……才