Tim has already got back from school.
She has been cooking for 3 hours as her best friends are going to pay her a visit.
They've been studying chemistry for 3 years.
The mechanic has repaired 10 cars thus far.
The girl had just closed the book, she had been reading all day long.
The boys never wanted to work at this job.
Have you always been so frienly to strangers?
Have your friends ever tried going offshore?
