look,the dog is barking loudly.why is it so __?I don't know.

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look,the dog is barking loudly.why is it so __?I don't know.Maybe something __ has happened.
a.exciting;interesting b.excited;interested c.exciting;interested d.excited;interesting 不会做请大哥大姐帮帮忙,然后帮我分析一下为什么这样选,

第一个选 excited ,
第二个选interesting
exciting :令人（动物）兴奋的 ,形容令人兴奋的物
excited:兴奋的,表示人或者动物兴奋
interesting; 让人或者动物感兴趣的
interested:感兴趣的,表示人感兴趣的
这样就好理解了：-ing 一般都是形容词 ,后面要加让人或者动物产生感情,情绪的物
-ed ,是分词形式,直接表示人或者动物的感情,情绪,做表语

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