Mike often （收集）stamps and plays basketball in his spare time.
The big tree over there is probably one （百）years old.
It's not safe to leave a baby in a car by （它自己）.
假设你对Henry组织的夏令营感兴趣，请在Camp X﹣treme 的网页上留言，向Henry 询问今年夏令营的相关信息（如举办时间、地点或活动内容等）。请咨询一个问题，完成下面小题。
Henry，I'd like to enter your Camp X﹣treme. （不超过10个单词）
遇到麻烦时,艾伦经常请求帮助。
Alan often help when he is in trouble.