根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。（每空一词）
Everyone knows that exercise is important. We all need to exercise. Doctors say i _小题1:____ is good for us. It makes your heart and body s__小题2:___. Children who often exercise are more alert（灵活的）. This means they do better in tests and schoolwork than those who don’t exercise.
There are many w__小题3:____ to exercise. You can walk, run, swim, skate, or play ball games. Make sure you e__小题4:___ in the following ways: you have to like what you’re doing. Exercise enough --- but not too m__小题5:____. It’s best to exercise t__小题6:___ each week. Thirty minutes each time is enough. Try all kinds of things until you find one, two or even three sports that feel r__小题7:__for you.
You can exercise at fitness centers (健身中心). They have l__小题8:____ of equipment （设备） there . The equipment will help exercise your arms, legs and other parts of your body to make you f __小题9:____. Some people buy equipment for their homes. But it is very expensive.
Exercising can be fun. Friends can exercise t _小题10:____ at a fitness center, or they can play sports together. How do you exercise?
小题1:it
小题2:strong
小题3:ways
小题4:exercise
小题5:much
小题6:twice
小题7:right
小题8:lots
小题9:fit
小题10:together
题目分析：
小题1:根据前一句 We all need to exercise“我们都需要锻炼”可知，本句的意思是“医生说它对我们的健康有好处。”这里的“它”就是指的锻炼。所以本题填it。
小题2:我们都知道，锻炼身体能让我们更加强壮，而根据上文我们知道，这里的it就是指的exercise，它能让你的心脏和身体强壮。所以本题填strong。
小题3:通过You can walk, run, swim, skate, or play ball games.可知，本句应该是说有许多锻炼的方式。故应该用ways。
小题4:根据you have to like what you’re doing.“你必须喜欢你正在做的。”可知，本句应该是确保用这种方式进行锻炼。所以应该用exercise。
小题5:根据Exercise enough --- but not可推知，本句的意思应该是“进行足够的锻炼，但是不能太多”，此处的“太多”是不可数的，所以应该填much。
小题6:根据句意，本空应该填表示次数的词与each week构成频度短语。表示次数的单个以t开头的只有twice。本句的意思是“最好一周锻炼两次。”
小题7:根据句意，本空应该填表示“适合的，适当的”，又是以r开头的，所以应该填right。本句的意思是“试一下各种运动，直到找到一种、两种或者三种适合你的运动。”
小题8:根据句意和of以及l字母，可知空应该是lots。本句的意思是“那里有许多设备。”
小题9:通过The equipment will help exercise your arms, legs and other parts of your body “这设备将帮你锻炼你的胳膊、腿和你身体的其他部分”可知，这种锻炼能让你健康，但是本空是以f开头的，所以不能用healthy，只能填fit。
小题10:根据句意和下文中的together可知，本句的意思是“朋友可以一起锻炼”。所以本题填together。
点评：完成本题有一定的难度，首先应该熟读文章，弄清文章的意思，根据生活常识，增加对体育锻炼的理解；其次，应结合文意和句意选择合适的词，注意推断；再次应注意词的时态和固定用法。