1. The band struck up a lively tune as the parade began.
2. I struck up a conversation with the person sitting next to me on the bus.
3. The two friends struck up a partnership to start a new business.
4. As soon as the bell rang, the students struck up a game of soccer in the schoolyard.
5. The actor struck up a friendship with his co-star on set.
6. I decided to strike up a deal with the vendor to get a discount on the product.
7. The ambassador hoped to strike up a dialogue between the two warring countries.
8. The politician tried to strike up support for her campaign by speaking at local events.
9. The musician struck up a beautiful melody on her violin.
10. After a few failed attempts, I finally managed to strike up a relationship with my new neighbor.