A housing bubble is an economic situation _____ occurswhen house prices rise much too fast.

The girls are talking about the art festival _________.—Yes. They have so many fun things to share.

I looked for you in the office, but I could’t find you.—Oh, I in the library

It’s niceday, isn’t it—Yes. What fineweather!

A special dance ________ horse dance becomes so hot that many famous people can’t help copying that.