综合填空： 根据短文内容选择方框内的单词，并用其正确的形式填入空白处，使补全后的短文意思通顺，语法正确，结构完整。

The students are talking about their   at school. Maria likes English very much. She thinks it’s easy and   . But Zhou Yan has different ideas. She says it is difficult and boring. She likes history  she can learn about the past. Ellen  biology. She knows a lot about plants(植物) and animals. Which subject do you like  ? Can you tell me why?