Was Tom a member of Greener China?—Yes, he has ___ Greener China for 5 years.

You speak English well.Who teaches you?–Nobody.I learn it by _________.

Which of the caps will you take?—I’ll take _______,one for my father ,the other for my brother.

The whole world is undergoing the biggest financial crisis nowadays, ____ calls for international cooperation among all nations to get over.

Who wants ____ the singing club?