If you want to get a reader's attention you would might like to use a sentence that has purpose or something that can suprise the reader and interest them to read deeper,
like:the ice melts quickly on the river over the warm dry sun...
If you're trying to add a word to the next sentence it could either be "Although" or "However". The second option sounds better than the first though
1. The answer is b.) whom.
2. The answer is b.) sudden.
Apex Prospero forces Caliban to do physical labor, while he has Ariel perform magic for him.
