ChenWeiisn’tatschooltoday 国语站 题库 3.82K 大中小设置文字大小 问题详情:Chen Wei isn’t at school today ________ he is taking a robot competition in Shanghai. A. so B. because C. before D. if【回答】B知识点:连词题型:选择题 TAG标签:ChenWeiisn tatschooltoday #