—Id like a pen which _________ well.—Will this one _________?

---Do you know the timetable of the school bus? ---Sure, the first trip________ at 6:30 a.m. and usually continues until 4 p.m. on weekdays. 

I don't really work here; I ____ until the new secretary arrives.

Your desk is covered with too many unnecessary things, including used papers and books. You’d better ________ some of them. 

--The window is dirty.----I know. It ______ for weeks.