March 12 is Tree Planting Day．Do you know how 1 a tree．First, the 2 must be just right－neither too wet nor too 3 ．It’s best to plant trees in 4 because it’s 5 ．Dig a hole 6 for the tree．But the hole should not be 7 deep．Second, knock a long, strong stick into the earth 8 to the hole． 9 sure that it is straight．Then put the tree in the hole 10 it is straight． 11 that, you should put the 12 back in the hole again, and 13 it down hard with your foot several times．Tie the tree 14 the top of the stick to keep it straight．As last you should water it well, as 15 as possible．