We should keep our eyes _____ while doing eye exercises.[ ]A. close B. c

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We should keep our eyes _____ while doing eye exercises.[     ]
A.  close
B. closed
C.  open
D. opend

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举一反三

I saw her while l was shopping.
I saw her _____ _____.

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"Look! There"s a notice on the wall," Mary said, _____ to it.[ ]
A. pointing
B. pointed
C. point
D. points

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While _____ in the country, I made friends with Jim.[ ]
A. works
B. to work
C. working
D. work

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I.ook! There is a book _____ on the floor. Please _____.[ ]
A. laying; pick it up
B. lying; pick
C. lying; pick up it
D. lying; pick it up

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I"m so sorry to keep you        for a long time.   [     ]
A. waiting
B. to wait
C. wait
D. waited

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