问题
选择题
We are going for a picnic tomorrow. I'll call Wendy to make sure ________. [ ]
A. why to start
B. when to start
C. what to start
D. which to start
答案
答案:B
We are going for a picnic tomorrow. I'll call Wendy to make sure ________. [ ]
A. why to start
B. when to start
C. what to start
D. which to start
答案:B