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So difficult______ it to acquire a large vocabulary without the help of a teacher that he was close to giving up .?
A. he have felt B. have he felt?
C. he did feel D. did he feel?
查看习题详情和答案>>So difficult____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .?
A. he have felt B. have he felt?
C. he did feel D. did he feel?
查看习题详情和答案>>So difficult_____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .?
A. he have felt B. have he felt?C. he did feel D. did he feel?
查看习题详情和答案>>