Peter is busy _________ at school，but he never forgets _________ exercise every day．
A．working；doing B．working；to do C．at work；doing
1、B
科目：初中英語 來源： 題型：
Peter is busy _________ at school，but he never forgets _________ exercise every day．
A．working；doing B．working；to do C．a(chǎn)t work；doing
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