We should save water because people can use water to make _____.A. energy B. sound C. rain
We'll never give up_______ on the project no matter how difficult it is.
You_______ buy a gift, but you can if you want to.
Your house is always so tidy - how do you_______ it with three children?
- Do you know Lucy well? - Of course I do. We've been good friends_______ ten years ago.
You need two years of teaching_______ to get this job.