题目内容
【题目】写出下列动词的过去式。
1. do (__________) 2. am/is (__________)
3. cook (__________) 4. call (__________)
5. plant (__________) 6. listen (__________)
【答案】1. did 2. was 3. cooked 4. called 5. planted 6. listened
【解析】
略
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