英语翻译this is the first time that your grangpa has been to the

前边的句子是一个定语从句,反义疑问句要问主句的,即：isn't it?
再问： 再问一个 wilt three people be enough？ another three ________. Awill be Bwil do C can do D must do
再答： 这个再问的，有点意思了。 从语法角度讲，容易被选为A，而事实上口语中非常常见的WILL DO，应该是正确答案。译为：三个人够不？再来三个就可以了。