they felt very ______.A.happy B.happilier C.happily D.happier
问题描述：
they felt very ______.A.happy B.happilier C.happily D.happier
答
A.happy
felt是连系动词,后面带形容词作表语,happy是形容词.D.happier 是形容词比较级,而本句
并无比较之意,不用