问题
填空题
写出下列动词的过去式。
1. learn 2. sing 3. take
4. eat 5. climb 6. do
答案
1. learned 2. sang 3. took 4. ate 5. climbed 6. did
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写出下列动词的过去式。
1. learn 2. sing 3. take
4. eat 5. climb 6. do
1. learned 2. sang 3. took 4. ate 5. climbed 6. did