不知道B的回答是按照实际情况答还是随便答的..我是按自己的知识回答的,有的加了don't,有的没有.
1.Is it impolite to eat soup very noisily in most African countries?
A:I want to know whether/if it is impolite to eat soup noisily in most African countries.
B:I think (that) it is impolite to eat soup noisily in most African countries.
2.Can people eat with their left hands in Muslim countries?
A:I want to knpw whether/if people can eat with their left hands in Muslim countries.
B:I don't think (that) people can eat with their left hands in Muslim countries.
3.Will people leave as soon as they finish eating in western countries?
A:I want to know whether/if people will leave as soon as they finish eating in western countries.
B:I don't think (that) people will leave as soon as they finish eating in western countries
4.Do Americans eat food like chicken legs with their fingers?
A:I want to know whether/if Americans eat food like chicken legs with their fingers.
B:I don't think (that) Americans eat food like chicken legs with their fingers.
5.Does a formal western dinner always start with a small dish?
A:I want to know whether/if a formal western dinner always start with a small dish.
B:I think (that) a formal western dinner always start with a small dish.是按实际回答的