How long have you ________ Hong Kong —For two weeks.

Betty hasn’t got __________ meat in the fridge.

I can’t find Xiao Ping. Where did you see him this morning?— In the reading room _________ he often studies in.

(2013·湖北高考)An artist who was recently traveling on a ferry to the southern island discovered ________ a long lost antique Greek vase

He ______ be in the classroom, I think.—No, he ______ be in the classroom. I saw him go home a minute ago.