1 ) he didn't have the strength to continue his journey.
2) the trek was seriosly injyred in an accident. ?
3) unfortunately, there was only one survivor from the accident.
4) All cyclists should wear helmets.
5) Quiet please.I'd like to make an announcement.
6) this hostel is quite expensive, so we can stay for a few more days.
7) More that two hundred competitors enterned the contest.