单项选择题

How long does he surf on the Internet on school day

A. 1 to 3 hours.
B. Half an hour.
C. Two hours.
D. 2-10 hours.
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It was unfortunate, but she had no ______ but to act as she did.
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The English language contains a(n) ______ of words which are comparatively ______ used in ordinary conversation.
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