Question

【题目】We must________ hard and________ from each other.

A. learning；study B. to study；study

C. study；learn D. to learn; learn

Answer 1

【答案】C

【解析】句意：我们必须努力学习，互相学习。must为情态动词，后接动词原形，and连接的动词结构一样。故选C。