more than one person ----made suggestions 填什么 为什么

has （现在完成时）
因为主语是one person
也可以填 had （过去完成时）
请楼主参考以下：
The phrase “more than one” can be either singular or plural,depending on how it’s used,according to The American Heritage Book of English Usage.
When “more than one” modifies a singular noun,it goes with a singular verb:
“More than one person is going.” 【谓语动词是三单式is,说明上面的是has made正确!】
But when it’s followed by “of” and a plural noun,it takes a plural verb:
“More than one of the people are going.”
When “more than one” stands alone,it can be either singular or plural,depending on whether you want to emphasize the oneness or the more-than-oneness.
If someone asks you how many people are going,for example,you could reply “More than one is too many” or “More than one are going.” （grammarphobia）