Would you please look after my pet cat while I am on holiday in Yangzhou— .

I don’t know__________ the bag is. – Tom’s.

Chinese astronauts can also walk in space now. — Yes, they’re _____ our nation.

Obama delivered a speech to 500 local youths during his visit to China, many of _______ were from Fudan University and Tongji University.

____ is known to all, persistence is a kind of quality and that’s ____ it takes to do anything well.