many times, but she still didn't know how to do it.A. She was taughtB. Having taughtC. Ha

发布时间：2020-08-14 23:33:31

     many times, but she still didn't know how to do it.
A. She was taught
B. Having taught
C. Having been taught
D. She has taught

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(答案→)A. She was taught
B. Having taught
C. Having been taught
D. She has taught
解析：因为有but连接所以前后两个必须是完整的句子。
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