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20.(   )It's hard to keep the house _________with three kids.

    A.cleaned         B.to clean         C.clean           D.have cleaned

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19.(   )Don't worry! I'm sure I can run ___________ to catch .up with them.

A.fast enough      B.enough fast      C.enough slowly     D.slowly enough

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18.(   )Which sigh tells you the way into a building?

    A.EXIT          B.PUSH           C.PULL            D.ENTRANCE

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17.(   )Sunglasses can protect our eyes _________the sunlight.

    A.of           B.from         C.for          D.to

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16.(   )There are ________students waiting in the hall,

    A.hundreds of; aren't they               B.four hundred; aren't they

C.four hundreds;  aren't there           D.hundreds of; aren't there

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15.(   )Why not change to CCTV-2? There is________ on.

    A.important something                B.important any-thing

    C.something important              D.anything important

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14.(   )She is wearing a dress _______silk.

A.made from       B.made of         C.make from      D.make of

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13.(   )Jenny went out of the classroom ________saying a word. She was really angry.

A.with         B.not          C.without       D.not

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