单项选择题

A) how C) whether
B) when D) whatever

A．how
B．when
C．whether
D．whatever
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单项选择题
A) namely C) naming B) name D) named
A．namely
B．name
C．naming
D．named
单项选择题
A) continuously C) seriously B) vigorously D) roughly
A．vigorously
B．continuously C) seriously
C．roughly
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