.九年级语法选择(本大题有10小题,每小题1分，共10分)Do you know how to study 1 and make your study more effective (有效率的)? We all know that Chinese students usually study very hard2 long hours. This is very good, but it doesnt help a lot, for an efficient student must have enough sleep, enough food and enough rest and exercise. Every day you need to go out for a walk or3 some friends or some places. Its good for your study.When you return to your study, your mind4 and youll learn more and study
