I know Bob... How long have you known Bob?
1. My sister is married. How long..has your sister been married.?
2. Boris is on holiday. How long..has Boris been on holiday..?
3. I live in Glasgow. How long.have you lived in Glasgow..?
4. It is snowing. How long.has it been snowed..?
5. Jack smokes.How long..has Jask been smokes.?
6. I know about her problem. How long.have you known about her problem..?
7. Jack and Jill are looking for a flat. How long.have Jack and Jill been loking for a flat..?
8. Diana teaches English in Germany. How long.have Diana teached Englisk in germany..?
9. Dennis is in love with Margaret. How long..has Dennis been love with Margaret.?
10. Colin has a car. How long..has Colin had a car.?