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11 Ms. Johnson was busy____ the house when the postman came.
(A)cleaning
(B)to clean
(C)clean
(D)cleaned


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最佳解!
顧龍夫(已上榜,繼續衝!) 大一下 (2016/12/27)
過去進行式和when/while+過去式連用時,過去進行式的子句表示發.....觀看完整全文,請先登入
2F
【站僕】摩檸Morning 國三下 (2016/10/06)
原本題目:

11 Ms. Johnson was busy the house when the postman came. (A)cleaning (B)to clean (C)clean (D)cleaned

修改成為

11 Ms. Johnson was busy____ the house when the postman came. (A)cleaning (B)to clean (C)clean (D)cleaned
4F
萬晉宏 大四上 (2023/10/18)
busy後面省略介系詞in,因此接V-ing

11 Ms. Johnson was busy____ the house wh..-阿摩線上測驗