Ⅰ.单词拼写
1．Physical activity is an important factor in keeping ______(健康)．
2．The ______(体育场) emptied at the end of the match.
3．The ______(主人) came across the room to greet his guests.
4．The 800-metre race is the fourth ______(比赛项目) of the sports meeting.
5．With the help of GPS, it is now easier to ______(追踪) people on the road and ensure their safety.
【答案】1.fitness 2.stadium 3.host 4.event
5．track
