XB 3 Unit 2 语法填空

Unit 2 Healthy Lifestyle
As teenagers grow up，they become more independent and start making their own decisions.However，during this period，it can be easy for some of them 1.___________(form) bad habits.These bad habits，if 2._____(leave) unchecked，could lead to more serious ones when they become adults.3._______(change) bad habits is never easy，even with many attempts.The good news is that we can change our bad habits if we understand 4._______ habits work.To facilitate 5._____ positive change in our bad habits，we must first examine our bad habit cycles and then try to adapt them.We can do this by 6.________(combine) the information from our habit cycles with our own positive ideas.We can also use the habit cycle 7________ (create) good habits.Many of us try to change bad habits quickly，and if we are not successful straight away，we often become pessimistic and give up.In fact，the most successful way to change is not suddenly,8._______ over a period of time.To reach the goal of change，a person must 9._______(repeat) take many small steps.Young people have the power 10.______(build) a happy and healthy life full of good habits!
1.to form 2.  left3.  To change  4. how 5. a 6. combining 7. to create 8. but 9. repeatedly 10. to build