Tom has to work（）his classmates since he is less clever.

Tom has to work（）his classmates since he is less clever.

A.twice as hard as

B.twice as hardly as

C.twice hard than

D.twice as harder as

正确答案：A

★《布宫号》提醒您：民俗信仰仅供参考，请勿过度迷信！