The average age at which people begin to need eyeglasses vary considerably.A、var

游客2023-12-31  22

问题 The average age at which people begin to need eyeglasses vary considerably.

选项 A、varies
B、is varied
C、will vary
D、has been varied

答案 A

解析 结构应用主句主语为the average age,是单数,应用一般现在时的第三人称单数形式,因此A为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3321007.html
最新回复(0)