tom ,come here and has some food.错在哪?

可以说Tom comes here and has some food.
或者说Tom come here and had some food.
问题：come和have时态明显就不一致,要么是一般现在时,要么是过去时.
有不懂的可以继续提问哦!我考试就是第一种方法可是被老师给差了。是 是作文还是选择题？可以附上原题。