The blackboard is _______ the wall(墙). It is_________ in the wall.A. on, not B. on, / C. in, no
What’s the weather ___ in summer ?
-David has made great progress recently. -______, and ______.
WeBeijing next week.
The water in this river is harmful because It’s a ______ river.
There _______ a mother ,a father and three children in the family.