We should bear in mind that social development and balance of nature should go  in         .  

My brother has been preparing carefully for the English exam, so that he can be sure of passing it at his first _______

 The ______ in the mountain village struck most of the visitors.

       He told me that she had met one of my old friends in the street ________.

It is a common          for Chinese to have banquets or drinking parties when treating important guests, on major occasions and during festivals.