1 . ——________ French book is this?
——It must belong to _________. She' s the only one that is studying French.

A．Who's; Li Ying

B．Who's; Li Ying's

C．Whose; Li Ying

D．Whose; Li Ying's

2 . 我可能要离开几周。如果我不能按时还书怎么办?
I may be away for two week. ________ ________ I fail to return the books on time?

3 . —__________does it take you to get to school by bike?
—About fifteen minutes.

A．How soon

B．How often

C．How long

D．How far