While I was in the foreign country, my younger brother always ____ me of what was happening in big cities in time.

Zhao Benshan, whose overwork ______ his health failure, didn’t perform in the 2012 Spring Festival Gala on CCTV.

This is not a match.We're playing chess just for________.

  Mom believes that those words put to paper two centuries ago really _____ something.

Carbon dioxide, which makes a ______ between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.