He was busy writing a story, only once in a while to smoke a cigarette.
I fell in love with the West Lake ____ I went to Hangzhou.
Not until he left his home _____ to know how important the family was for him.
There are two caps on the table, _____ belongs to Tom.
The temple , _______ the Song Dynasty ,was pulled down last month.
Weather in these years is not similar to ____in the past .