Wang Ping _____his keys in the office so she had to wait unt

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Wang Ping _____his keys in the office so she had to wait until his sister ___ home

lost丢失
went 回家感觉arrived回到家更好些
再问： A. had left; came B.has left; comes C. left; had come D. had left; would come ,选哪个是正确的
再答：答案选A项

had left过去完成时，Wangping 遗落或丢失钥匙发生在他回家之前
came过去时，他姐姐或妹妹回来

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