問題詳情:
When my little son was learning to walk, I often saw him _______ down..
A. fall B. fell C. feel D. felt
【回答】
A
知識點:非謂語動詞
題型:選擇題
問題詳情:
When my little son was learning to walk, I often saw him _______ down..
A. fall B. fell C. feel D. felt
【回答】
A
知識點:非謂語動詞
題型:選擇題