6.When you are in public,you m　　talk too loudly.　

答案：mustn’t

5.In China,people eat lots of　 d　　at Spring Festival.　

答案：dumplings

4.You mustn’t do any c　　 on the first day of the Chinese New Year.　

答案：cleaning

3.When you 　　　(接受)a present,you must use both hands.　

答案：accept

2.In China,when someone gives you a present,you must w　　and open it later.　

答案：wait　

1.In the USA,when you get a present,you must open it i　　.　

答案：immediately

6.B　who引导的定语从句，作定语，修饰前面的先行词the only one。　

5.A　过去分词作定语，表示被动。　

4.B　make后面接双宾语,一般结构为：make+名词/代词+形容词/名词。故famous 作补语。　

3.A　不定式短语“to be a musician”作目的状语。