Ⅰ、1、are, used
2、used to
3、getting used to

Ⅱ、
1B7A
2A8B
3B9C
4A10C
5D11A
6C12B

Ⅲ、One possible version：
Dear Eric,
How is everything going? Pm glad to hear that you are coming to spend the Spring
Festival with us. Here are some things we are supposed to do during the festival. Before
the Spring Festival, we are supposed to clean our houses and buy many things for the
New Year. On New Year's Eve, all the family members are supposed to get together and
have a big dinner. During the festival, we are supposed to visit the relatives. We are sup-
posed to say "Happy New Year! " to greet each other. "When in Rome, do as the Romans
do." If you come to China, please follow the customs.
Yours,
Wang Wei