题目内容
13. do auxv. & v. → (单三式) → (过去式)
14. have v. → (单三式) → (过去式)
15. go v.去;走 → (单三式) → (过去式)
13. does,did 14. has,had 15. goes,went
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题目内容
13. do auxv. & v. → (单三式) → (过去式)
14. have v. → (单三式) → (过去式)
15. go v.去;走 → (单三式) → (过去式)
13. does,did 14. has,had 15. goes,went