The explanation of our teacher will make the reading easy .A. to be understand B. to under

问题补充：

The explanation of our teacher will make the reading easy .

A. to be understand

B. to understand

C. understood

D. understanding

答案：

A. to be understand

(答案→)B. to understand

C. understood

D. understanding

解析：本题考查非谓语动词。easy to understand整个作宾补。这里不是make sth/sb done结构。easy后用不定式的只用主动表被动。故选B。