Sentence 1: Shane was working hard in his bathroom. 
 Sentence 3: He'd selected a tiny mosaic tile 
 Sentence 4:  It was going to take a lot of work but it would be worth it 
 Sentence 5:  Shane couldn't wait to see the final product! 
 Option 1: He was removing his shower and tiling it but will never select a tiny mosaic tile. 
 Option 2: He was removing his shower and tiling it.