—Americans spend more on health care than most other people .— You’re right . But a new study shows that life in the United States is falling .
But for their help, we ______ the program in time.
Every pupil is _______ to be in his classroom at 7 o’clock in the morning, which is the rule of the school.
The passer-by jumped into the cold water to save the _____ boy, who cried for help, but it was too late and the boy was _______ at last.
The computer system _____ suddenly while he was searching for information on the Internet.
Cycling is highly _____ to people’s health and the environment.