问题
填空题
Read and write．（写出下列单词的过去式。）
1. aren't_______ 2.isn't_______ 3．am not_______
答案
1. weren't 2. wasn't 3. wasn't
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Read and write．（写出下列单词的过去式。）
1. aren't_______ 2.isn't_______ 3．am not_______
1. weren't 2. wasn't 3. wasn't