Anything dropped falls towards the center of the earth because of ______.
A. weight
B. gravity
C. density
D. attraction
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Now I can manage to make myself ______ sufficiently in your language.
A. being understood
B. understood
C. to understand
D. to be understood
Which of the following best describes the purpose of the passage（）
A. To show how American society has changed.
B. To compare two different ways of American life.
C. To tell the meaning of the American people's attitude towards life style.
D. To prove that modern life is better than the life in the past.
So urgent ______ that the doctor rode away without delay.
A. the case was
B. it was the case
C. the case being
D. was the ease
What does Bill advise the woman to do
A. Take care on her trip to Sri Lanka.
Be as careful as possible.
C. See as many differences as possible.
D. See the country as very different.
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