— Jack, do you know anything about Doctor Brown?—I ______ to him for years. I don’t see how anyone else could do better. [ ]

You must be tired now. Why not ____ a rest

_ all of you are top students, only one will be chosen for the coming competition.

Once he makes up his mind to do something, he will devote himself _________to it

Excuse me， ___________ is the railway station， please—It’s about ____________ meters away. You can walk there.