答案是A
以下是这些单词的区别与用法
sometime,sometimes,some time,some times用法区别
sometime
（1）副词：某个时候.可指过去或将来的某个时候.如：
① Would you come to the cinema with me,sometime?赏脸找个时间和我看场电影吗?(将来)
② We’ll take our holiday sometime in August.我们会在八月找个时间度假.（将来）
③ I bought this sometime last summer.这是我在上个夏天买的.（过去）
④ This mansion was built sometime around 1980.这栋大厦是1980年左右建的.（过去）
（2）形容词：前,过去的.意思类似former.
① This is our sometime general manager.这是我们的前任总经理.
② Our sometime classmate,Rose,is now a pop star.我们以前的同学罗斯,现在是明星了.
sometimes 副词：有时候.顺便提一下,at times也是“有时”的意思.
① Every man is a fool sometimes,and none at all times.每个人有时都会犯傻,但没有谁会一直都傻.
② I sometimes have letters from him.有时我会收到他的来信.
some time 某段时间.常与for连用.
① We plan to stay in Hainan for some time.我们打算在海南呆上一段时间.
② I will keep the computer for some time,so you can use it.这部电脑我会留着一段时间,你可以用.some times 几次.several times也可以表示“几次”,但比some times较确定.time作可数名词时可作“次数”解；表示“时间”时是不可数名词.
① I am sure that we have met some times before.我肯定我们之前见过几次了.
② The newly bought microwave oven failed to work some times.新买的微波炉坏了几次了.
Are是复数所以用people单复同形
