It was not until mid-nightthey reached the camp site.

You see, “Food Safety” receives thousands of Internet hits a day.—Obviously, it has become one of the________ topics recently.

Li Lin, you shouldn’t shout at your parents. It will make them very angry.—I’m sorry ______what I______.[ ]

_______ is necessary for you to lock the car when you don’t use it.

It’s fine today. Let’s play ________ basketball outside.