It is not socially for parents to leave children unattended at that age.
A．accessible B．adorable C．adaptable D．acceptable
—Why didn’t you tell him about the meeting?
—He rushed out of the room __ I could say a word.
A. before B. until C. when D. after
According to statistics, a man is more than twice as likely to die of skin cancer _________ a woman.
A. than B. such C. so D. as
__ he has limited technical knowledge, the old worker has a lot of experience.
A. Since B. Unless C. As D. Although
As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
A. primary B. alternative C. instant D. unique
The old lady’s hand shook frequently. She explained to her doctor this shaking had begun half a year before, and , only because of this, she had been forced to give up her job.
A. when; how B. how; when C. how; how D. why; why
