他撞到了一个骑自行车的人。

He drove into a ___cyclist.

有我、我的朋友和一群十个人，由一位专业骑自行车的人引导。

[There] was me, my friend and a group of ten people guided by a professional ___cyclist.

那位骑自行车的人为了安全戴了头盔。

The ___cyclist wore a helmet for safety.