中译英（按照括号内的要求）

Good book can provide people useful knowledges and the methods to solve problems.
It's harm for the human being to catch and kill the wilds in large numbers.
All the things in the room are gone,except a bed and a few chairs left.
In case that the prolific earth be carried away by the flood,we have to plant adequate trees.
He made a promise that he would turn the books back the in next week.
The costumer complained about the food here to the manager.
Keep quiet,or you will wake this baby up!