the children are having a good time,__________with sand,others with toys.a.some of them playingb.who playing c.some of ehom are playing d.some of them
问题描述:
the children are having a good time,__________with sand,others with toys.a.some of them playing
b.who playing c.some of ehom are playing d.some of them
答
选c.some of them are playing
答
c.some of them are playing