In the past three years,we learned about three thousand English words.B处learned改为have learnedB处learned改为have learned
A B C D
【考点】现在完成时.
【答案】B处learned改为have learned
【解答】
【点评】
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发布:2024/4/20 14:35:0组卷:10引用:1难度:0.7