21. April Fool’s Day is a day _____ people sometimes play tricks on friends.
(A) where
(B) which
(C) when
(D) how
詳解 (共 5 筆)
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本題因為要修飾前面April Fool'...
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April Fool’s Day is ...
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愚人節是一天,____人們有時候可以捉弄...
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21. April Fool’s Da...
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