It’s good for you ____healthy food and _____more exercise.

There is ______ thing as a free lunch There may be a hidden cost

Dou you feel like 　　　　there or shall we take a bus—I’d like to walk. But since there isn’t much time left, I’d rather you 　　　　a taxi.

I don’t remember ________ the book yesterday.

There is ______ thing as a free lunch.