Make sentences. 连词成句。

1. is, the, that, playground, (.)  

2. is, computer, this, the, room, (.)  

3. too, is, teacher's, that, office, the, (.)  

4. it, time, is, for, lunch, (.)  

5. it, computer, not, is, the, (.)

土面蒸发过程可分为（）、（）和（）三个阶段。