If we had taken such effective measures much earlier, the river ________ so seriously now.

Tom is a promising student. I am sure that with his________effort, he will make a very successful scientist.

I waited for my friend for a long time at the bus station，but she didn’t________at last．

I was laid off last month so ______ I borrowed some money in my life

一I turn on the TV for you，Grandpa一Yes，thanks a lot，my dear.You’re so considerate.