阅读下面有关“Keep词组”短文，了解这些词组的不同含义，然后从方框中选出合适的词组，将其字母序号填入空格中，使句子意思正确。
Keep off the grass
There are notices（告示牌）with “keep off the grass” in gardens and parks. Don’t walk or lie on the grass. You must protect the environment(环境).
Keep the change
You go to buy something in a shop. You give more money to pay for it, the assistant or waiters will pay back some money. You can say “keep the change” to let them keep the money for themselves.
Keep goal
When you watch a football, hockey（曲棍球）or cricket（板球）game, you will hear the words “ keep goal”. Guards（守门员）should stop the opposing（对方的）players from scoring(得分)。
Earn the keep
You should earn the keep to make a living. You need money to buy food, clothes and all the other things. If you don’t work hard, you won’t have enough money to eat, wear or live.
Keep going
If you are in a difficult situation（境况）, you must keep going. The life will be better in the future. You should try to live a happy life.

A. keep off the grass     B. keep the change     C. keep goal  D. earn the keep         E. keep going

小题1:The poor family       although they now have a bad life.
小题2:You are old enough. It’s time for you to get a job to        .We will never give you money.
小题3:Did you see the football game yesterday? The guard      well in the game,
小题4:The notice says “         .” Sam, get out of the garden.
小题5:Here are ten dollars. Please        for a tip.(小费)