The boy wanted to ride his bike in the street, but his mother told him _____.
A. not to
B. not to do
C. not do it
D. do not to
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Some students are going to China in summer vacation, and ____.
A. some are to America
B. some going to America
C. some to America
D. some America
The workers did all ___ good care of the old man.
A. they could to take
B. they could take
C. which they could to take
D. what they could to take
Of all the things in the world, I think life and love are ____.
A. very much precious
B. more than precious
C. the preciousest
D. the most precious
The photographs of other planets taken by satellite are clear than ___.
A. the earth
B. those taken from the earth
C. those of the earth
D. of the earth
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