In Russia, you shouldn't to whistle while indoors because it could lead to bad luck

1. In Russia, you shouldn't to whistle while indoors because it could lead to bad luck.
A. Correct
​B. Incorrect
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2. You mustn't wear long pants and shirts with sleeves when visiting the Grand Palace in Thailand.
A. correct
​B. Incorrect
3. You should give and take things with your right hands in India. correct Incorrect In North Korea, people have to watching state television programs.
A. correct
B. Incorrect