We have just (to order) a three-course dinner. Peter (to sunbathe) since 10 o'clock this morning What are Andrew and David doing? - They (to work) in the garden for three hours Your travel agency (to sell) separate services ? - Yes, it (to do)
1) We have just ordered.......2) peter has been sunbathing since 3)they have worked in 4)selling ......-yes it does