She began teaching her three children at home.She began teaching her three children at home because she felt they weren't learning what she thought they _____ learn.A.couldB.mightC.wouldD.should请问是不是选D?如果是那为什么不能选A或

She began teaching her three children at home.She began teaching her three children at home because she felt they weren't learning what she thought they _____ learn.A.couldB.mightC.wouldD.should请问是不是选D?如果是那为什么不能选A或 完形填空.When Mary Smith was a_____,she wanted to be a teacher,_____she liked childer.When she watwenty ,she began teaching in a small school.She was a good teacher ,and she ____a lot with the childer in her class .They______her teaching.One day she began to lie 歌词 根据首字母提示完成短文（八上寒假作业）When Mary Smith was a student,she always wanted to be a t___,because she liked children.When she was twenty-two y___ old,she began teaching in a small s___.She was a good teacher.The c___ liked teaching teaching She is teaching she expect everyone to listen. ________(return) home,she began to cook. I thought ________ there was a good idea,填she teaching 还是her teaching? she began to cry,改成she began crying对吗?如果错了,为什么? sister a teacher she teaching my is likes.合成一句话. She is teaching the boy a lesson 的被动语态 Lao She learned to teach为什么不是leared teaching She is teaching five students.改为______ ______students______she______. She has been teaching math for six years的同义句She has been teaching math _____ _____ _____ _____. 连词成句：1.her,career,sister,teaching,my,in,began,2006.2.the,can't,date,decide,he,the,meeting,of3.news,she,comes,i'll,when,tell,the,her4.and,the,shot,it,dog,killed,policeman,the5.listen,night,interesting,to,Bob,programme,did,an,last until she began her speech,i__(not realize) sheuntil she began her speech,i__(not realize) she wasn't Chinese he began teaching when he was 17.改为同义句he began teaching———— ———— ———— ————17