bk27机炮:Sports are looked upon as the most popular form of relaxation_____everybody can ______.

选A
这是一个定语从句，首先可以排除B和C，因为在以下几种情况下，定语从句的关系词只能用that：
（1）在不定代词，如：anything, nothing, something, the one, all, much, few, any, little等作先行词时，只用that，不用which。
例句：There is nothing that we can use.
（2）先行词有no, the only, the very, some修饰时，只用that。
例句：This is the very man that I want to meet.
（3）先行词被序数词、形容词最高级修饰时，只用that。.
例句：That is the most important thing that I want to know.
从以上可知，第一空应填that，又知，先行词是在从句中作宾语，加上it就是重复，故选A。

首先 其后是一个定语从句 定语从句中出现most 肯定用that
这样排除B C
然后是区分 enjoy 和enjoy it

这是个定语从句 所以 你若再在后面加个it 就重复累赘了

所以 正确答案是A！

选A
这是一个定语从句，首先可以排除B和C，因为在以下几种情况下，定语从句的关系词只能用that：
（1）在不定代词，如：anything, nothing, something, the one, all, much, few, any, little等作先行词时，只用that，不用which。
例句：There is nothing that we can use.
（2）先行词有no, the only, the very, some修饰时，只用that。
例句：This is the very man that I want to meet.
（3）先行词被序数词、形容词最高级修饰时，只用that。.
例句：That is the most important thing that I want to know.
从以上可知，第一空应填that，又知，先行词是在从句中作宾语，加上it就是重复，故选A。

选A ！！