单项选择题

A．6 pills.
B．5 pills.
C．4 pills.
D．8 pills.
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单项选择题
Last year ______ of new books were published on human rights issues.
A．the hundred
B．hundreds
C．a hundred
D．one hundred
单项选择题
Having finished the letter, she ______ it carefully and put it into the envelop.
A．folded
B．bent
C．turned
D．curved
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