This is an illness that can result in total blindness ___ left untreated．

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• 1The rainy season is coming and let’s make full use of the ___ days to dry whatever is needed to dry．

  A.few last sunny

  B.last few sunny

  C.last sunny few

  D.sunny last few

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• 2I would have come earlier, but I ___ that you were waiting for me．

  A.didn’t know

  B.hadn’t known

  C.would have known

  D.haven’t known

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• 3I’m afraid I’m not fit for the job, for it is ___ calling for much patience．

  A.it

  B.that

  C.one

  D.which

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• 4If the wind doesn’t ___ before three o’clock, we won’t be able to take off today．

  A.go up

  B.go down

  C.go off

  D.go by

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• 5---Did you hear the news this morning、---Oh, yes, ___ was announced on the radio has caused great excitement among the students．

  A.that

  B.what

  C.as

  D.it

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• 6---Let’s try operating the machine right now．---Wait． Better read the ___ first．

  A.instructions

  B.explanations

  C.information

  D.intrduction

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