Ⅰ. 单项选择。
()1. he didn't know the custom, he asked the local people for help.
A. Unless B. As soon as C. Since D. Although

Ⅰ. 1. C

()2. The dinner was delicious everyone ate a lot.

A.so; that
B.such; that
C.too; to
D.enough; to

2. A

()3. You will not be welcomed you follow the local rules.

A.if
B.unless
C.as soon as
D.so that

3. B

()4. I saw her, I knew she was from Japan because of her greeting.

A.Unless
B.As soon as
C.So that
D.Although

4. B

()5. It's a popular tradition millions of people celebrate it every year.

A.so; that
B.such; that
C.too; to
D.enough; to

5. B

()6. Many people often travel to foreign countries they can experience different cultures.

A.so that
B.unless
C.as soon as
D.although

6. A

()7. He didn't attend the party he was not invited.

A.unless
B.because
C.as soon as
D.so that

7. B

Ⅱ. 根据中文意思完成句子。
1. 在法国，参加聚会时迟到几分钟是正常的，但过早到达会造成麻烦。
In France, it's normal to be a few minutes late for a party, but arriving too early can .
2. 除非你很了解对方，否则最好不要问私人问题，比如年龄或收入。
It's best not to ask personal questions like age or income you know the person well.
3. 他如此专注于了解文化差异，以至于忘记了时间。
He was learning about cultural differences he forgot the time.
4. 这个手势在很多国家是不礼貌的，所以我们应该避免使用它。
This gesture is impolite in many countries, so we should it.

Ⅱ. 1. cause trouble/problems 2. unless 3. so focused on; that 4. avoid using