If you study as a graduate student in the U.S.A, you should always try to avoid telephoning your American classmates at sometime later than 11 p.m. unless there is an emergency.
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Dr. Smith, over 60, invited Li Bing to his birthday party. Li Bing brought him a China god of longevity as a present.
A. 对
B. 错
Many English houses are known only by a name. If you have difficulty in finding such a house, you may try asking the local shopkeepers.
A. 对
B. 错
At a dinner you can begin to eat when the hostess picks up her own spoon or fork.
A. 对
B. 错
You don't need to tip the girl who shows you to your seat in a cinema or theater in the U.K,
A. 对
B. 错