The speech by the mayor of Shanghai before the final voting for EXPO 2010 is strongly impressed ______ my memory

_____________ we all know is that destroying nature means destroying ourselves.

When I try to understand ____ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.

Have you heard_______the terrible accident happened______the afternoon of April 2

You can find whatever you need at the shopping centre, ________ is always busy at the weekend.