He looks very sad ,what shold I do to make him___a happyb to happyc happilyd was happening
问题描述：
He looks very sad ,what shold I do to make him___
a happy
b to happy
c happily
d was happening
答
A happy
make sb +adj=使...变得...
例：
I make the house beatiful.
我把房子装饰得很漂亮~