I would rather send e-mail to my friends than go to visit them,it___time.takes ,saves,needs.

问题描述:

I would rather send e-mail to my friends than go to visit them,it___time.takes ,saves,needs.

saves,给朋友们发电邮节省时间,it指发电邮这件事.实际上如果不知道it指代的是什么(本题关键),把其他两选项带进去,发现:takes=needs,都是需要时间,所以双淘汰