—_______ should we clean the library?
—Twice a week.
A．How many B．How much C．How long D．How often
科目：初中英語 來源： 題型：
—_______ should we clean the library?
—Twice a week.
A．How many B．How much C．How long D．How often
科目：初中英語 來源：江蘇省宿遷市2010年初中畢業暨升學考試英語試題 題型：016
－________ should we clean the library?
－Twice a week．
How many
How much
How long
How often
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