英语句子语法问题all the main languages have been studies

英语小小语法All communications with the north have been stopped by 用简单的英语解释下列句子 He knows at least two languages.Nearly all the 英语句子中语法问题The most important day I remember in all my life is They have all been languages that were used by people in man In the picture,all the trees have been cut down.句子中为什么加been 英语句子改造基础问题The workers whose names are on this list have been What have been the main effects of technological development 解释句子All the book I have have been taken to school. 两个句型转换~1.While some of the Aboriginal languages have been lo 英文句子理解As my own studies have advanced,i have been increasing 下面的句子错在哪里?All the staff have been told that under no circums 英语翻译etc这个单词All these languages have more people speaking the