Find and correct one mistake in each sentence

find and correct one mistake in each sentence
1) do you know how many pages does this book have?
2)  I'm really looking forward to meet my old friend living in HCM city
3)  Children now spend much time on internet than watching TV
4) I'm really boring when I watch documentaries
5)  Many people wprk hardly every days to produce TV programmes
6) 4 days are too short for us to go on holiday abroad
7) I often don't come late for my piano lessons at the music club
8) There was fewer furniture in our room in the past than these days