----I think collecting stamps is great fun.----We can also learn a lot from it .A. I agree

问题补充：

----I think collecting stamps is great fun.

----We can also learn a lot from it .

A. I agree with you. B. No, I don think so. C. No, I don like it.

答案：

解析：I agree with you我同意你的看法；No, I don think so.不，我不这样认为；No, I don like it.不，我不喜欢。句意：我认为收集邮票很有趣。根据下文，我们也能从中学到许多东西。可知前文为肯定回应，故虚安A。