Child as he was, he ________ a good idea to solve the problem.
Trees are good for man. We can’t plant them ______ many.
—I saw Mr. Black on the playground this morning.—You ________. He’s still on holiday in Sanya.
The officer commanded that everyone passing by________ that day.
We ________ him to give up the plan, but he turned a deaf ear to us.
The professor insisted ____ with his family rather than ____ to another city.