________is your friend staying here?-Only for four days.[ ]

I still remember the museum_______ we visited last year.

_will Mr. Smith Shanghai?—In a week. He will have a meeting in Shanghai.[ ]

Could you tell me what he said just now? — Sorry, I_____ what was happening outside.

_________ has Liu Xiang taken part in world’s competitions of 110-metre hurdles?— I’ve no idea. Let’s find it out on the Internet.