40. When you arrived, I ________ dinner in the kitchen. Therefore, I didn’t hear the doorbell ringing.
(A)cook
(B)cooked
(C)had cooked
(D)was cooking

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難度： 非常簡單

最佳解!
	Taickbin Chi 高二上 (2016/06/06) When S1 + Ved, S.....看完整詳解檢舉

	3F Japunking 國三下 (2016/09/02) 用過去進行式強調當時正在做什麼檢舉
	4F Elsa 大一上 (2016/09/05) http://www.slideshare.net/Aweather/02-release-ver-12 檢舉
	5F 陳珮瑜大三上 (2021/06/10) 與過去事實相反 If+had+p.p.+would/should/could/might+have+p.p. 與現在事實相反 If+were/bed/were ving/助動詞過去式+would/should/could/might+VR 檢舉

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