You ____ to me by finishing the task yesterday. [ ]

I’m afraid by the time you arrive this afternoon I_______ a lesson then

下列句子中，加线的成语使用恰当的一项是

Your colleague says she cannot help because she has got much work to do.— Well, she _____say that because she always uses that excuse. [ ]

China is a country with the largest population in the world, we all know it