A: Hi, Darren. Do you like riding your bike around the city?
B:       Cycling can help us save energy, and it’s easy to park the bike.
A: I agree, but I don’t like cycling at all.
B: Why?
A:       What must I do if I want to go cycling?
B: First, you should never ride too fast.
A: That’s easy, I’ll ride slowly.     
B: Second, you can wear bicycle helmet(头盔) when
riding.
A:       What else?
B:       And you should also learn more about
the traffic rules.
A: I see. I’ll buy a bicycle and have a try next week.