1. Be careful when crossing the street, always look both ways before stepping off the curb.
2. Please be careful with that fragile vase, it's very valuable.
3. I always make sure to be careful when handling sharp objects in the kitchen.
4. It's important to be careful when driving in icy conditions to avoid accidents.
5. Be careful not to spill your drink on the new carpet.
6. When walking on a slippery surface, be careful to avoid slipping and falling.
7. Please be careful with that box, it's heavy and could hurt someone if it falls.
8. I always remind my kids to be careful when playing near the pool to prevent any accidents.
9. Be careful not to touch the hot stove, it can cause serious burns.
10. When hiking in the mountains, it's important to be careful of loose rocks and uneven terrain.