用所给单词的正确形式(动词原形、过去式、过去分词)填入句子中.1)They ______(not,get) their books yet. They're still waiting.2)He_______(not,make) any mistakes since september.
问题描述:
用所给单词的正确形式(动词原形、过去式、过去分词)填入句子中.
1)They ______(not,get) their books yet. They're still waiting.
2)He_______(not,make) any mistakes since september.
答