such heavy pollution already, It may now be too late to clean up the river.
------Can you give me some advice about the design? ------ I think it should _________ to all the ages and groups.
—Did you enjoy your tour around Beijing, Mr Singh? —Yes. But I hate when the tour guide held out his left hand to shake hands with me.
Thanks to the work of UNICEF(联合国儿童基金会). Otherwise many children the chance of living a good life.
My friend Jack was the first person I knew ______an iPhone 5S.
They hope to turn our society into one ______ those in need can get help.