Keys should never be hidden around thehouse since thieves _____ know where to look

My younger sister wants to gether ears .

mith, why are you always asking me to dothe difficult work—Because you _______ do such a thing and nobody elseis fit for it.

____ red is a symbol of warmth, it can sometimes make people feel uneasy or even frightened

______ is known to us, the 16th Asian Games will be held in Guangzhou, China in November, 2010.