没有知识，你成功的可能性就会小一些．
Without ，you may have little chance to achieve success．
If you want to get a prize in the speech competition， you should （准备） for it well．
When you are tired， you can go to a （令人放松的） place to have a rest．
Every autumn， the （落下的） leaves make our school more beautiful．
To be safe，students should （避免） going out alone at night．
At the age of （四十）， the writer finished his fifth novel．