Paul doesn’t have to be made . He always works hard.A. learnB. to learnC. learnedD. learni

问题补充：

Paul doesn’t have to be made . He always works hard.

A. learn

B. to learn

C. learned

D. learning

答案：

A. learn

(答案→)B. to learn

C. learned

D. learning

解析：考查非谓语动词。本题考查make sb. do的被动结构sb be made to do。句意：Paul不必被压迫学习，他一直很勤奋。