根据短文内容，从短文后的选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。
Being a good student doesn’t mean you have to drop all social activities and dive into your books．It is still possible to have a healthy social life while getting good grades．____71____．Here is how you can achieve it:
Decide for yourself at the start of the term that you won’t let your schoolwork sweep you away．_____72____
Write down your weekly schedule on a piece of paper．Chances are , you’ll have small gaps between classes during the week and more free time at the weekend．Make sure that every time you find yourself in one of those between-class gaps you use the time efficiently ．__73____．
