Hong Kong has about forty public beaches. Some of them are very famous around the world. People can go there for a swim. You can go to them by bus. To go to some beaches yu must take a boat.
You will swim there without danger if you remember these instructions:
?Never swim alone.
?Never go out in a boat if you cannot swim.
?Never swim after a meal or when you feel hungry or tired.
?Don’t stay in the water too long.
Remember:A red flag means that it is dangerous for anybody to go into the water.A blue flag means that it is dangerous for children.
根据短文内容，判断下列各句正误。正确的在题前括号内写“T”，错误的写“F”。
There are about 40 public beaches in Hong Kong.
You should swim after a meal.
You can take a bus to go to most of the public beaches.
You’d better swim when you’re alone.
If you were a child, you could swim when you saw a red flag.