I. 1. after all

   2. gets used to

   3. drop by

   4. get mad

   5. take off

   6. cleaned off

II. 1. found out

    2. on time

    3. expected

    4. To my surprise

    5. at the table

    6. Because of

    7. except

III. 1. aren’t supposed to; are expected to

     2. was supposed to

     3. are supposed to / are expected to

     4. are supposed to

     5. aren’t supposed to

IV. 1. named / called

     2. the capital of

     3. it’s impolite to use

     4. make me feel at home

     5. no reason; to be

     6. plans to go

V. One possible version:

Dear Tom,

You’ d like to know Chinese table manners. Now I introduce some to you. You are supposed to use chopsticks and bowls to eat. It’s polite to let the old start eating first if there are old people at the table. You are not expected to talk or laugh loudly at table. You’d better not stick your chopsticks into your food or hit an empty bowl with your chopsticks. You are not supposed to smoke during the dinner.

Yours, 

Li Hua