25. The train leaves at 6:00 p.m., so I have to be at the station ____ 5:40 p.m. at the least.
Mrs Green wants to buy that kind of cloth because she ____ that the cloth ____very well .
---When ______ and visit our exhibition next month ? -- -When _______ , I will let you know .
Michael ______ here to see you and he ______ a note on your desk .
---How long _______ each other before they ________ married ? ---For about a year .
I really wonder ______ he has posted me many parcels _____ we worked together .