_____ are stamps used ______ — Sending letters.

Totally ______ accident, the businessman picked up a _______ antique(古董) in the flea market(跳蚤市场).[ ]

What’s the time–It’s _________.

Our English teacher often asks us to keep a record of things that may _________ be forgot easily [ ]

Do you enjoy Han Lei’s songs— Yes. He is the winner of I AM A SINGERⅡ. I can’t think of anyone with a _____ voice.