—Have you returned from Japan yet? —Yes but I ______ at home for only four days before my

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—Have you returned from Japan yet? —Yes, but I ______ at home for only four days before my company sent me to Australia.

A.was

B.have been

C.will be

D.would be

请帮忙给出正确答案和分析,谢谢!

热搜:y理论和x理论的区别