句中的 suggestions 可以改为单数 suggestion。在类似的疑问句中,any 后面接的可数名词用单数或复数均可以,主要看在通常情况下是“一个”还是“多个”。比如我们问某人有几个孩子时,通常会说:
Does he have any children?
但是,在实行计划生育的年代,由于提倡一对夫妇只生一个孩子,所以人们就会说:
Does he have any child?(比用 Does he have a child 更强调)
1. used with uncountable or plural nouns in negative sentences and questions, after if orwhether , and after some verbs such as prevent , ban , forbid , etc. to refer to an amount or a number of sth, however large or small (与不可数或复数名词连用,用于否定句和疑问句,也用于if或whether之后,或紧接某些动词如prevent、ban、forbid等)任何的,任一的
•I didn't eat any meat. 我一点儿肉也没吃。
•Are there any stamps? 有邮票吗?
2. used with singular countable nouns to refer to one of a number of things or people, when it does not matter which one (与单数可数名词连用)任一
•Take any book you like. 你喜欢哪本书就拿哪本。
•Any colour will do. 什么颜色都行。(摘自牛津词典)
放在不可数名词或复数可数名词之前,暗示说话者心目中考虑到该事物的量而不单单是该事物的质。
综上,个人认为此处用复数合理。