单项选择题

Mathematics as well as other subjects()a science.

A. was
B. is
C. are
D. belong to

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单项选择题
If a child is absent () school for long periods, he should be given extra work.

A. at
B. in
C. from
D. out of
单项选择题
It is of no use () about it, because he will never change his mind.

A. to argue               
B. arguing
C. argued                
D. to have argued
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