来自林冬生的问题
用动词的正确形式填空i----(notbe)myhomeworkyesterday
用动词的正确形式填空i----(notbe)myhomeworkyesterday


用动词的正确形式填空i----(notbe)myhomeworkyesterday
用动词的正确形式填空i----(notbe)myhomeworkyesterday
doone'shomework,是昨天用didn'tdo.be应为do