--- It’s dangerous to swim here. Look at the sign. --- Oh, I notice it. Thanks for telling me.
The blue coat is the cheapest and the red coat is the second _________
It’s important _____ healthy. Do you think so?
-- ____ is the population of your city?-- About seven ____.
Usually, we like to _________ before doing sports so that we can't hurt during the sports.
I usually go home by bike, but sometimes I _________.