How long has the lab in your school been___use?

How long has the lab in your school been___use? how long has your father worked in the company? How long----------your uncle---------【be】in the city has bee How long has your brother ___ in our country in the past thi how long has your brother () the new dictionary How long does the primary school in Italy last? How long has he been in the hospital?翻译 how long has the fire how long has the meeting()? how long you in the country with your grandparents how long is your jounery to school how long has your son ___?