I’ve found your watch. You ____ it on my desk yesterday.
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.