You don’t know ______ I want to see you again. It’s a year since I last saw you.

－So what have you learned?－We’ve learnt _______about life in poor areas. Which of the following is NOT right?

— _______ have you lived in Wuxi? — Since I was born.

Zhalong is an ideal home for wildlife . Many birds can find food ____ there . 

My mother is working so        that she can       have any time for me．