中考網(wǎng)整理了關(guān)于2021中考英語過去完成時專項練習(xí)題（五），希望對同學(xué)們有所幫助，僅供參考。

　　Catherine ______ the letter before her mother came into her bedroom.

　　A. had written

　　B. was written

　　C. has written

　　D. is writing

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