It's interesting to hear what the class think about action movies.为什么interesting后要加to啊?到底什么时候要加to什么时候不要加to啊?

It's interesting to learn.后面要不要加it? It's interesting. it's very interesting to get around the city. l think it's interesting to write computer p____ He thinks it's interesting to( )a comey We all found ____ to play the gameit interesting 还是it's interesting为什么 游览不同的城市很有趣 用英语翻译（it'sb interesting to do sth?it's interesting to do sth it’s sometimes dangerous to go alone.But it’s very interesting怎么翻译 I find it interesting to work with him.为什么用it 而不用it's? It's interesting ____me_____ with my peta.of;to talkb.for;to talkc.to'to talk be interesting 后可接什么?It's no longer interesting being with u or It's no longer interesting to be with 请指教 It's an interesting book it's difficut but interesting I think it's interesting to learn English .改同意句I think（ ）interesting to learn English . I think it's interesting to learn English改同意句I think（ ）interesting to learn English . It's interesting for me to do homework.同义句 Doing homework is interesting to me.为什么不能for me I find ( ) interesting to learn English.填it 还是it's We all found ( ) interesting to play the game.A:it B:this C:it's