—Do you know that some new types of energy _____ very little and never run out?—Yes, I agree.
The houses in big cities are so expensive that I can’t __________ to buy one .
.A smile costs _________, but gives so much. So we should learn to smile. A. something B. anything . nothing D. Everything
--- Is your teacher friendly ______you? --- Yes, he is very good ______us. A. to, to B. with , with C. to, with
---Look, here comes Cindy! She is always full of _____________. ---____________. Because she takes a lot of exercises every day.
---Why did you laugh just now? ---Ted wanted to tell us _____ very funny story, but he forgot ______ ending himself.