Yao Ming’s basketball career after years of hard work and now he is popular in the world.

问题补充：

Yao Ming’s basketball career after years of hard work and now he is popular in the world.

A. took on

B. took off

C. took up

D. took out

答案：

A. took on

(答案→)B. took off

C. took up

D. took out

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