-- Is that girl Susan?-- It ______ be her. She left for Beijing yesterday.A. needn't B. can't C. mustn't
---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.
It is _____ good film that none of us dislike it .
_____ Lily _____ Lucy may go with you because one of them must stay at home.
He took a plane _____ he would get home early .