( )1.Our teacher often keeps us ________ classroom every day,so we must keep our classroom选择

问题描述:

( )1.Our teacher often keeps us ________ classroom every day,so we must keep our classroom选择
( )1.Our teacher often keeps us ________ classroom every day,so we must keep our classroom .A.clean,clean B.cleaning,cleaning C.cleaning,clean

选择答案是c,有个句型是keep sb doing sth,