---Why did you laugh just now?
---Ted wanted to tell us _____ very funny story， but he forgot ______ ending himself.

---Look， here comes Cindy! She is always full of _____________.
---____________. Because she takes a lot of exercises every day.

--- Is your teacher friendly ______you? --- Yes， he is very good ______us.
A. to， to B. with ， with C. to， with

.A smile costs _________， but gives so much. So we should learn to smile.
A. something B. anything
. nothing D. Everything

The houses in big cities are so expensive that I can’t __________ to buy one .