My mother worked to a school这句话哪里错了

my mother worked very hard to send me to My mother worked to a school这句话哪里错了 my mother works from morning to night 与my mother worked from the morning to the night today.第一句话加the 可以吗. 第二句正确否?帮我解释下,谢谢 the last factory--i am going to visit is the place --my mother worked five years ago.答案是“that ,where”想问一下“which,where”可不可以 My mother wants to test My mother has worked in this factory 2 years.My mother has worked in this factory _____ 2 years.(A)about (B)for (C)in (D)since ____ _____you come here?--because my parents worked here.when____you come to china?(过去）what_____your parents?--my father is a doctor and my mother_____a teacherwhere does your mother teach?--she _____in chaoyang middle schoolthe story the three my mother ( )in that factory at the age of 18. A.had worked B.has worked C. worked D. works请说明原因. My mother worked until ten o' clock last night(同义句） I have to help my mother ()dinner Happy Birthday to me.Thanks my mother. Happy birthday to my mother是什么意思 I'm writing to my mother翻译 My mother always listens to c_ music. My mother wants to go shopping ______lunch what I owe to my mother是什么意思? my mother likes to dress s_____ I told my mother that I ____ for about two weeks.空里面应该填have worked还是had worked还是两个都可以?为什么?