Question

【题目】—What _____ you supposed ____ when you are in China?

—You should shake hands.

A. are, to do B. do, to do

C. are, doing D. have, to do

Answer 1

【答案】A

【解析】

试题分析：句意：当你在中国时你应该怎么做？——你应该握手。be supposed to do应该做某事。根据句意可知，答案为A。