—Where did you meet him?—I met him on a number eleven bus, if you       know.

The red bike               be Hu’s. Hers is blue.

 ---Must I answer it in English?---No, you _______. You can use Chinese.

--Whose backpack is this? ---It            be Jim’s. Look, his student’s card is in it.

One of my friends _______ moved to America. I miss her so much.