Those students are doing their homework,but we do not.修改病句

Those students are doing their homework,but we do not.修改病句 Those students are doing their homework,but we don"t.哪里错? We two are all students 修改病句 they do not doing their homework为什么不对呀? They are doing their homework carefully.you'd better not---- students,going,the,are,do,homework,their,to Students do their homework every Do our teachers know what their students are doing online? the are doing their homework.对doing their homework提问 the students doing their homework解译 Tell the students their homework A.do B.doing C.to do D.did They are not ( ) while they do their homework.