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I’mnotgoodatMaths,soIdon’tknow

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問題詳情:

I’mnotgoodatMaths,soIdon’tknow

I’m not good at Maths, so I don’t know _________ out this difficult Maths problem.

A. when to work    B. who to work      C. what to work      D. how to work

【回答】

D

知識點:非謂語動詞

題型:選擇題