My sister and I are not in different _____, but we are in the same _____.
They _____ some useful information to the police .
Could you tell me ___a meeting in Guangzhou next week ?
He looks good ____red while black looks good _____me.
---Thank you for your help .---____.
---Have you seen ____ pen ? I left it here this morning . ---Is it _____ black one ? I think I saw it somewhere.