________ a child begins school, he enters a world of fierce competition where success and failure are clearly defined and measured.
Leaders should be careful not to act beyond their __________ and do things against the law.
About 270 million people in rural areas in China have no __________ to safe drinking water.
The flu is believed __________ by viruses that like to reproduce in the cells inside the human nose and throat.
There were violent winds of 120 kilometers per hour or more in a hurricane,__________ huge waves, heavy rain and floods.
If city noises __________ from increasing, people __________ shout to be heard even at the dinner table in 20 years from now.