问几道六年级英语题……(快)……

问题描述:

问几道六年级英语题……(快)……
①Fourteen students in our class are boys ,______are girls.(选择)
A.the others B.the other
②Alice is four years old.Mary is eight years old.(改为同义句)
Mary is _____ Alice's ____.
答案上是"twice”和"age",可我觉得很变扭.

①The others
②twice 倍数+名词age
是指是其年龄的两倍