If you google the lyrics, most pages will give you this:
Only you can make all this world seem right
Only you can make the darkness bright
Only you and you alone can thrill me like you do
And fill my heart with love for only you
I do hear D after can but I guess it's his pronunciation. As to TO before fill - it's an illusion. If you listen carefully, you will hear that it's the D from anD that he is stretching: anddd.
Hope this helps.