List three pieces of advice and three obligations your friend should allow
*Have to: It's an obligation-you have no choice (đó là điều bắt buộc-bạn không có sự lựa chọn)
*Should: If it is a suggestion or advice-it would be best to follow it (đó là lời đề nghị hay lời khuyên-tốt nhất nên làm theo)
-Advice:
+Children should take things from adults with both hands
+You shouldn't talk loudly and wear shorts when going to the pagoda
+You should bring a gift when you visit someone's house
-Obligation:
+You have to take your hat off when going inside the main worship area off the temple
+You don't have to tip in Viet Nam
+Before leaving the dinner table, you must ask for permission
