There are _____ desks in his classroom..

_______ a teacher, I think I should teach the students not only how to learn but also how to be a man. [ ]

What about _____dictionary on the bookshelf? —It’s very useful ,I think.

_______is it from here to your home? —20 minutes on foot.[ ]

A terrible earthquake hit Wenchuan at 2:28 p.m. _______ May 12th. [ ]