【题目】写出下列单词的过去式
1.are___________
2.is___________
3.am___________
4.aren’t___________
5.isn’t___________
6.am not___________
【答案】1. were 2.was 3. was 4. weren’t 5.wasn’t 6.was not
【解析】
略

【题目】写出下列单词的过去式
1.are___________
2.is___________
3.am___________
4.aren’t___________
5.isn’t___________
6.am not___________
【答案】1. were 2.was 3. was 4. weren’t 5.wasn’t 6.was not
【解析】
略