Children won’t put on weight easily if theyto eat fruit and vegetables．A. persuadeB. were

问题补充：

Children won’t put on weight easily if theyto eat fruit and vegetables．

A. persuade

B. were persuaded

C. will be persuaded

D. are persuaded

答案：

A. persuade

B. were persuaded

C. will be persuaded

(答案→)D. are persuaded

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