It is very nice __(talk)to you.Bye

问题描述:

It is very nice __(talk)to you.Bye
答案talking
为什么不是to talk

是个语法上的习惯问题,和这个例子应该是一个道理:
刚和人见面的时候,要说:Nice to meet you
谈话结束要走了,则说:Nice meeting you
这个选择题里最后提到了"bye",所以同上,因为用ing形式,纯粹是个西方谈话中的习惯问题.