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【題目】When I wanted to show myself up at the party, the song I ________ so many times suddenly became difficult.

A.am practicingB.had practicedC.will be practicingD.have practiced

【答案】B

【解析】

考查時(shí)態(tài)。句意:當(dāng)我想在晚會上展示自己時(shí),我練習(xí)過很多遍的那首歌突然變得很難了。practice這一動作發(fā)生在became之前,也就是過去的過去,用過去完成時(shí),故B項(xiàng)正確。

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