動(dòng)詞時(shí)態(tài)練習(xí)
1.Jia bi's twenty.he_____some chinese by the time he ___ ten.
A.had learned,was B.has learned,was C..learned,was D.has learned,had been
2.Sandy_____here now.I guess she_____to the lab.
A.isn't,has gone B.is,has gone C.isn't,went D.isn't,has been
3.The street light____on when night falls.
A.will be B.have been C.would been D.are