In the United States and Canada, it is usual to leave your waiter a tip-extra money for service. Before leaving the restaurant, you leave the tip on the table. Most people leave about 15% of the total bill. Look at Joe’s check and answer the questions.

【蝦皮:教育學程考題彙編(教】評論
X(A)物質X匱乏時,冰棒即是美食☆ →...