Two years ago, my husband left a bike for me. If you live in a town, it is often faster than a car and don't have to worry about parking(停车). You can ___21___ it anywhere. Because it has a seat at the back and a basket at the front, I can take my small daughter when it is cold and it is snowing hard. It also can be dangerous. You must be ___22___ on a bike. Accidents are not the only problem. One day I went ___23___ and when I came back, I couldn't find my front wheel. It was a long walk to the bike shop! Now I have three strong locks.Sometimes my husband uses my bike for short trips. He is not good at ___24___ bikes, but he says it is better than waiting for a bus. He still likes his car for longer trips, but I think that all this sitting down is making him fat. ___25___ my bike I got a lot of exercise and fresh air, and makes me feel much healthy.