-----of the twins has been here before.

____of the twins has been there before ______of the twins has been there before ________ of the twins has been to England. ___of the twins has been there before A all B Neither C Both _____ of the twins has been to new york a both b nobody c ne The twins have never been to England before ( ) 1.___of the twins has been to America. The biologist has been here for ______. 小学英语首字母填空1.She has been here s_____the beginning of the seme They must have been here the day before yesterday,---------- The twins ____ Canada for three weeks. A.has been to B.have 反意疑问句he has never been here before,______ he?