―I believe it is the only solution to this problem.―That’s debatable, I think. I can_______five other solutions as good as that.

I will do what I can ____________ whenever it is necessary.

More people will eat out in restaurants _____ they do today

__ Sally , our monitor , was late for class this morning .__ _________ As far as I know , she never came late for class.

You must change trains Zhengzhou Beijing.[ ]