The explanation of our teacher will make the reading easy .
A. to be understand
B. to understand
C. understood
D. understanding
网友回答
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。