坐等He came here before there days.

坐等He came here before there days. How long__tom__ (learn)chinese befor he came to china?完形填空.最好做详细说明. He came here yesterday.对yesterday提问 1.He came here last month. he came here two hours before 改错 英语下句是Yes.he had live there for 15 years befor he came to china 上句怎么说 He has taught here since he came here.一句中对since he came here进行提问怎么说 How long__tom__ (learn)chinese befor he came to china?完形填空,麻烦名师解释的细点. he has c___ a lot since he came here He English for five years before he came here He came here three years ago.（同义句转换） Three years_____ ______ ______he came here. peter __(not) make many friends since he came here It has been 3 years since he came here. He came here two years ago.对划线部分提问 how long _______ he__________London before he came here? he came here yesterday,为什么不是had come he came here __his car 用什么with ,by,in He came here before two hours.这句话哪里有错?