The girl often ()her room to keep it ()

问题描述:

The girl often ()her room to keep it ()
A.clean clean B.cleans cleaned
C.cleans clean D.cleans cleaning
是C 还是D?

C,clean在第一个空里做动词,因为前面是the girl所以用第三人称单数cleans,在第二个空里做形容词,整洁的.