the students are busy （）their homeworkA.in B.on C.for D.withI“m busy （）my homework A.do B.to do C.does D.doingHe has lunch at （） 11点o”clock A.on B.about C.to D.for
问题描述：
the students are busy （）their homework
A.in B.on C.for D.with
I“m busy （）my homework A.do B.to do C.does D.doing
He has lunch at （） 11点o”clock A.on B.about C.to D.for
答
第一个是D 第二个是B.望采纳
答
D.with
D.doing
B.about