To keep healthy, Professor Wade _ cycling as a regular form of exercise afte

题型：同步题难度：来源：

To keep healthy, Professor Wade   _   cycling as a regular form of exercise after he  retired.[     ]
A. took up
B. picked up
C. carried out
D. took on

答案

举一反三

Standing at the top of the hill, we saw the train gradually _           and disappeared in the distance.      [     ]
A. swept up
B. picked up
C. put up
D. speeded up

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Plastic bags won"t be allowed to be used for free in the supermarkets. They can" t __________
easily, which does great harm to our environment.   [     ]
A. break off
B. break in
C. break down
D. break out

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Shall we __________ our discussion and have some tea or coffee, please?   [     ]
A. break off
B. break down
C. break into
D. break out

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As most of their houses were badly damaged after the earthquake，many people had to be________in a stadium.[ ]
A．put away
B．put out
C．put up
D．put off

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In Copenhagen Climate Conference，rich countries promised to________a fund of $ 100 billion a year
by 2020 to help developing countries.[ ]
A．make up
B．put up
C．set up
D．send up

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