lt seemed such a       that people just stood by watching the old lady lying on the ground suffering pains.

I arrive at nine o’clock, teach until twelve thirty and then have a meal; that is my morning       .

.The traffic slowed down because of the heavy snow in Yushu county, presenting a new __________ to the recovery from the earthquake.

After the flood, what we did first was to provide      for the homeless families.

The most important _____ of his speech at the G20 summit was that we should all unite to fight against the financial．