1.My brother usually studies English by working with friends.(对画线部分提问) _____ How ____ does your brother usually study English?2.This boy so young that he can’t do this job.(改为同义句) This boy is ____ ______ ____ too young to do this job.3.-- How do you learn Chinese?-- I learned by _________ reading a lot of books.4.She earns her life by ______ selling (卖) newspaper.5.-- ___________ How can you improve your writing?-- I can improve it by keeping diaries.