——I’m sorry that I didn’t work out this problem. ——It’s ___________our ability. I didn’t work it out, too.
_____ more time, he could have done the work much better.
Please get someone _____ the washing machine. I want to get it _____ as soon as possible.
On entering the office, I found Mr. Thompson _____ at the desk and _____ something.
_____ how to express the idea in English, he turned to the dictionary.
You'd better not have the light _____ all day long.