61 (Have )you ( been to ) Beijing twice ?62 The boy ( hasn't been ) to the amusement park .63 ( Neither of ) my parents has gone to work .64 ( It 's better ) for us ( to stay ) at home and do homework .65 Yes, ( I /we have )如果不明白，请再问；如果对你有所帮助，请点击本页面中的“选为满意回答”按钮，谢谢！...
