_________ dogs seldom bite.[ ]A. Bark B. To bark C. Barked

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_________ dogs seldom bite.[     ]
A. Bark
B. To bark
C. Barked
D. Barking

答案

举一反三

To get here in time, they came _________ all the way.[     ]
A. running
B. run
C. ran
D. to run

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He sat there_________, with his head on his hand.   [     ]
A. and think
B. thinking
C. thought
D. being thought

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The student sat there, __________ what to do. [ ]

A. doesn’t knowing
B. didn’t knowing
C. not know
D. not knowing

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The secretary worked late into the night, ___________ a long speech for the international conference.
[     ]
A. to prepare
B. prepared
C. preparing
D. was preparing

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European football is played in 80 countries, __________ it the most popular sport in the world.  [     ]
A. making
B. makes
C. made
D. to make

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