There is quite_serious problem,Do you think going to_war can solve it?

问题描述:

There is quite_serious problem,Do you think going to_war can solve it?
A.a.不填 B.不填,a C.the,a D.a.a

A
意思是这个一个十分严重的问题,所以用不定冠词.
后面是一个固定搭配,go to war当兵,作战.所以不用冠词.