假设你是李明，最近参加了一期“澳大利亚英语夏令营”活动。在为期两周的夏令营期间，你住在格林夫妇家中，他们为你提供了吃、住、行、旅游等帮助。请你写一封感谢信给格林夫妇。信的内容应包括以下要点：
(1)安全到家；
(2)感谢；
(3)在澳感受；
(4)保持联系。
注意：可适当增减细节；100词左右。

A. European schools take football seriously
B. European schools often arrange football matches for their pupils
C. schools in England care little about lessons
D. schools in England believe character training to be part of education

A. Two vertical rods.
B. A movement detector.
C. An elastic band.
D. Both B and C.