Once ___, it can never be forgotten.A.seeB.to be seenC.seenD.saw

Once ___, it can never be forgotten.A.seeB.to be seenC.seenD.saw

题型:不详难度:来源:
Once ___, it can never be forgotten.
A.seeB.to be seenC.seenD.saw

答案
C
解析
seen是过去分词,它用作时间状语时,常与once, when, whenever, while,until一起用.
举一反三
He did the right thing ___ for some fresh air even in cold winter.
A.to keep the chidlren from going outB.to prevent the childern from going out
C.to keep the children going outD.to prevent the children going out

题型:不详难度:| 查看答案
“Did he repair his bike all by himself that day?”  “No, he ___.”
A.hadn"tB.had had it repairingC.had it being repairingD.had Jimmy do it

题型:不详难度:| 查看答案
“Do you mind ___? ”  “Go ahead.”
A.closing the windowB.your closing the windowC.my closing the windowD.I closing the window

题型:不详难度:| 查看答案
Mary hasn"t decided whether to take up tennis, basketball, or ___.
A.beginning to play footballB.begin to play football
C.beginning playing footballD.to beginning playing football

题型:不详难度:| 查看答案
I’ll get my secretary ___ the letter.
A.copyB.to copyC.copiesD.copied

题型:不详难度:| 查看答案
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