—Are _______ your friends?—Yes, ____ are. 

---Is_______ necessary to learn another language?      --- I think so.

The number of the classes in our school is __________ than__________ of any other school in Nanjing．

-Does it often rain in Jinan? -No,         was little rain in Jinan last winter.

— I like speaking better than listening in English learning.—Oh, really? I think you should be good at          of them.