Question

【题目】We are going for a picnic tomorrow. I'll call Wendy to make sure_______.

A. why to start B. which to start C. what to start D. when to start

Answer 1

【答案】D

【解析】句意：我们明天要去野餐，我将会打电话给wendy来确定什么时候出发。A. why to start为什么出发；B. which to start哪一个出发；C. what to start什么出发；D. when to start何时出发。结合句意可知，答案为D。