How long have you been a teacher
How long have you been a teacher
-How long have you been a teacher?-( )about ten years.填介(副)词
"How long have you been
How long have you been to ShangHai?For a year.
How long have you been looking for a job?
--- How long have you been collecting coins?--- ________.A.S
How long have you been a m___ of Greener China?
How long have you been skating?
how long have you been playing basketball ?
How long have you been swimming?
How long have you been ____?
1.How long have you been here?