His aunt makes a living by collecting waste paper.请问牛人,这里的by可以省略吗?

aunt /never /makes /cake /a /birthday /my / . His aunt makes a living by collecting waste paper.请问牛人,这里的by可以省略吗? Tony often makes a[ ] in his room His aunt is a d________.he works in a hospital His aunt is a teacher 改为否定句 在线等待. 变为被动语态：His aunt bought him a bicycle His aunt bought him a bicycle（变为被动语态） He made plans ____(take) a vacation with his aunt. Li has been to () many yims this month.A.jia aunt B.his aunts C.aunt's D.his aunt's Mr.Smith's aunt ＿＿ them a big meal A.giveMr.Smith's aunt ＿＿ them a big mealA.give B.puts C.makes a aunt 还是an aunt 他叔叔和阿姨都是医生 译英His uncle is a doctor ---- ---- ---- his aunt. Mr.Browns aunt ___them a big meal.A.give B.puts C.makes D.does选什么?为什么 翻译句子He makes his case in a new book room,he,mess,a,makes,in,his连词组句 his aunt is in改为同义句his aunt is____ 3.she.aunt.his.is. Man makes his own