Not until World War II ______ to use new chemical techniques to purify penicillin.

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• 1— Father, you promised! —Well,____．But it was you who didn't keep your word first．

  A.so was I

  B.so did I

  C.so I was

  D.so I did

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• 2The naughty boy had wanted to play football with the kids in the street, but his parents warned him _______.

  A.not to

  B.not to do

  C.to do

  D.of doing

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• 3Her pronunciation is as good as, if _______ than, her teacher's.

  A.no better

  B.not better

  C.no good

  D.not good

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• 4On the one side of the road grass should be planted, and ______.

  A.on the other are flowers

  B.on another flowers

  C.on the other flowers

  D.on another are flowers

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• 5I don't think she'll be upset, but I'II see her in case_________ .

  A.she will

  B.she is

  C.she does

  D.she would

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