Write questions for these answers with how long and the present perfect. 1. they've been in class for 15 minutes. 2. he's known john since he was at primary school. 3. mary has worked in miami since for one year. 5. my mother has had a motorbike since last year. 6. they've studied chinse for two years.

jono1    1   12.08.2019 02:20    3