Sure! Here are the rearranged sentences:
1. In spite of preparing well for the examination, my sister did not score good marks.
2. Our school band, which had won many competitions, competed against the band.
3. At the last minute, the passengers were asked to leave the bus.
4. After school yesterday, we watched the cricket match.
5. My sister is wearing a pink shirt and a pair of blue jeans.
6. Last Saturday, I dined with my parents at a restaurant.
7. Madhu and Trisha walk home from school every day.
8. We met at a restaurant last Thursday.
These rearranged sentences are now meaningful, properly punctuated, and capitalized to form coherent statements.