精选优质文档-倾情为你奉上21. Eric is _ best friend and he often helps me in art class.A. my B. your C. its D. her22. -Where do you usually have lunch? -_ school.A. Of B. To C. At D. On23.Ill have an exam tomorrow,_ I want to go to bed early.A. so B. or C. but D. for24.-_ do you have PE? - Three times a week.A. How many B. How often C. How old D. How much25.The air is getting much_ than it was a few months ago.A. clean B. cleaner C.
