How many times______ not to play with fire?-I’m sorry. I’ll never do that again.
_______ you get on well with a number of people, you are usually friends with only a few .
---- It’s the office! So you _____ know eating is not allowed here.---- Oh, sorry.
You should write a _____________ composition every other week.
Although _______ my opinion, the old professor didn’t come up with his own.
Anyone , once _______ positive for H7N9 flu virus , will receive medical treatment from our government.