—Which is______，the sun，the moon or the earth?—Of course，the moon is.

If you want to be healthier,you should eat ______ meat and______ vegetables .

 We should eat _______ fruit and vegetables, but _______ meat. It is good for our health. 

The world’s population is growing ______ and there is _______ land and water for growing rice.

—Could you tell me someexamination skills?—Sure. In the exam, the _______you are, the_______ mistakes you’ll make.