he start learning english since three years____.A.before B.a

he start learning english since three years____.A.before B.a I began to learn English four years____.A.before 句子改错：I (A.have been) (B.learning) English (C.since) I (D.hav he has been learning english a year He began learning English____last year.A since B from C by D He said one hundred years____(be) a century. 关于英语1.He has _ us English since he came here.A.tahght B.teac He is leaving for Shanghai（ ）three days.【A.after B.before C. He must have learn English for three years,___?A.hasn't he B A student is learning to speak British English. He wonders: A student is learning to speak British English. He wonders ( __ three years ago.A,since B,for C,about