Jack __a postman for about 6 years.a has become b.has return
Jack __a postman for about 6 years.a has become b.has return
Jack ____a postman for about six years.
Ben ______ a teacher for 4 years .A.has been B.has become C.
He__a teacher for nearly five years.a.has been b.has become
tom has become a PLA man for about two years,hasn’t he错在哪
she it for about two years.A bought B has bought C has had
jack has been dead for three years
Jack___a teacher for months.A.has become B.has turned C.has
who has a pen pal?Tom __A.does B.has
Tom has worked in a office for about five years.
Tom___ China for 3 years.A.has been B.has been in C.has been
He has become a teacher for two years.这些句子怎么改错