Since 1961,I ___ （be） a teacher.Before that,I ___ （be） a student 1 has been 2 was这样填对吗,请说下原因为什么不是：Since 1961,I was a teacher.Before that,I have been a student.

I ___(go) with you if I have time tomorrow.We ___(be) good friends since we met at school. It has been ten years since I ___(be) a teacher. It ___(be)one and a half years since I __(begin) to study English. Since 1961,I ___ （be） a teacher.Before that,I ___ （be） a student 1 has been 2 was这样填对吗,请说下原因为什么不是：Since 1961,I was a teacher.Before that,I have been a student. I ___(know) him since he ___(is)a child 1.I ___（know）her since she was a little girl.2.I ___(not see) him for a long time,but his father often ___(see) hime.3.My sister ___(be) not in her room now.4.I ___(not finish) my homework yet.I ___(still do) it.5.Don't turn off TV.I ___(still wa I ___ (study) English since I went to the pI ___ (study) English since I went to the primary school. i have known him since he came here对since he came here提问 ___ ___ ___ you known him? Three years ___(pass)since I left school.急! ---How long ___ you ___(live) in Beijing?---Since I was ___(bear). I ___ (be) strongSister _____(be) thin. Since everyone ___(be) here,let's ___(begin) our discussion I have lived with my aunt since I was a baby,and I ___ her ____my mother .A.look up,as B.think,to be .think of,as D.refer to ,as选哪个?为什么? It (be)five years since I (ride)a bike. It---------- (be) four years since I moved here. 1.---___ you ___ (take) the medicine yet?---Yes.I ___ (do) it an hour ago.2.--- Where is Miss Wu?--- She ___ (go) to England business.3.Since then be ___ (work) at this factory.以上的题目是用所给单词的适当形式填空.4.The Greens have I ___(be) at home yesterday. I ___(be) sick at home yesterday.