Tony is not as clever as Lucy but he works than her.A. hardB. harderC. hardestD. the har

问题补充：

Tony is not as clever as Lucy, but he works than her.

A. hard

B. harder

C. hardest

D. the hardest

答案：

A. hard

(答案→)B. harder

C. hardest

D. the hardest

解析：句意：Tony 不像Lucy那么聪明,但是他比她学习更努力。not as…as中间用形容词或副词的原级，“和...不一样...” 因为后面有比较连词than，所以用比较级。故选B。