—The light in the office is still on.—Oh, I forgot _____. [ ]A. turning it of

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—The light in the office is still on.
—Oh, I forgot _____. [ ]
A. turning it off
B. turn it off
C. having turned it off
D. having turned it off

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举一反三

Mr. Johnson has given up _____. [ ]
A. smoke
B. smoked
C. to smoke
D. smoking

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The Dragon Boat Festival is celebrated by________    races.    [     ]
A. boating
B. running
C. swimming
D. relay

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I had a little trouble ______English grammar.    [     ]
A. to leam
B. learning
C. learned
D. learn

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We are all busy _____ ready for the final exam, and we"ll have to try our best to pass it. [     ]
A. getting
B. to get
C. get
D. Gets

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Dave finish ________ the book yesterday.[     ]
A. read
B. reading
C. to read
D. reads

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