How long have Mr Li___(teach)in our school?

How long have Mr Li___(teach)in our school? How long have you been -Mr Smith,how long ( ) you ( ) this company?-For about two months.A have,come toB have,gone toC have,been inD have,been to how many cats does mr black have? 填空:How long has Mr.Black been t_______in this school? how long have you been learning english? How long have you been studying? How long will I have to How long ____you___(have)your car? How long have you been in China? known,how long,have they,each other How long have ;Tom and Mary -------[结婚] How long I have to wait how long have you been dancing today? how long have you studied in this How long have you been there? How long have you live in China How long have you ----(live)here?