( )it is to go hiking during the summer vacation!

问题描述:

( )it is to go hiking during the summer vacation!
A.what a great fun B.how great fun C.what great fun D.how a great fun

正确:C
what 突出名词;how突出形容词/副词/动词,fun为不可数名词,其前面不能加不定冠词a.