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          Do not try to repair the computer yourself ________ you are an expert.

          1. A.
            if
          2. B.
            that
          3. C.
            unless
          4. D.
            because
          

			
          

			
          
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          The cars ________ yesterday sell very well．

          1. A.
            what I saw
          2. B.
            that I see
          3. C.
            what I see
          4. D.
            that I saw
          

			
          

			
          
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          Kitty will stay here for ________ to help us.

          1. A.
            sometime
          2. B.
            sometimes
          3. C.
            some time
          4. D.
            some times
          

			
          

			
          
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          I have a science class _______ Monday.

          1. A.
            in
          2. B.
            on
          3. C.
            at
          4. D.
            of
          

			
          

			
          
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          This boat ________ a duck.

          1. A.
            likes
          2. B.
            look likes
          3. C.
            looks like
          4. D.
            looks likes
          

			
          

			
          
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          These are your new trousers. Please________.

          1. A.
            put it on
          2. B.
            put on it
          3. C.
            put them on
          4. D.
            put on them
          

			
          

			
          
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          The shop ________ at six p. m.

          1. A.
            is close
          2. B.
            closed
          3. C.
            closes
          4. D.
            is closing
          

			
          

			
          
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          One of ________ throwing a Frisbee．

          1. A.
            the boys is
          2. B.
            boy is
          3. C.
            the boys
          4. D.
            the boys are
          

			
          

			
          
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          Computers ______ because we can get lots of information.

          1. A.
            are used wide
          2. B.
            is use widely
          3. C.
            is using widely
          4. D.
            are used widely
          

			
          

			
          
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          English ______ a lot for business between different countries.

          1. A.
            uses
          2. B.
            used
          3. C.
            has used
          4. D.
            is used
          

			
          

			
          
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