Mom, can you at 8:00tomorrow morning.

You should take off your shoes before you ＿＿＿ the new flat.

― There ________ a basketball match between Class Three and our class in ten minutes. ― Great. Let’s go and cheer (欢呼) for them.

It was a serious mistake, ______ caused by carelessness.

Jim has three hamburgers _____ lunch.[ ]