Do you know how to plant a tree? First, the ___(1)___ must be just right neither too wet nor too dry. It's best to plant trees in ___(2)___ because it's warmer. Dig a hole ___(3)___ for the tree. But the hole should not be ___(4)___ deep. Second, knock a long, strong stick into the earth ___(5)___ to the hole. ___(6)___ sure that it is straight. Then put the tree in the hole ___(7)___ it is straight. After that, you should put the earth back in the hole again, and ___(8)___ it down hard with your foot several times. Tie the tree ___(9)___ the top of the stick to keep it straight. At last, you should water it well, as ___(10)___ as possible.