单项选择题
（）you work, the more you can harvest.
A.Hard B.Harder C.The harder D.The hardest
单项选择题 （）today. Yes. It was even hotter yesterday.
单项选择题 （）to have kept you waiting so long. Oh, never mind. After all, you are here.
单项选择题 （）of them thinks that is a good idea
