单项选择题 Don’t burp.It’s not cute and it’s not a compliment in most parts of the world.What is the meaning of the word "burp"？（）

单项选择题 It is inappropriate to ask for a doggy bag when you are a guest.Here，"doggy bag"means（）.

单项选择题 （）do not maintain continuous eye-contact while talking with others.

单项选择题 In（），eye contact remains direct and is the way people show their interest.

单项选择题 In（），keeping eye contact is important during an introduction and for as long as you are being aderssing.