请教where do you have to put your bag in the locker first?

请教where do you have to put your bag in the locker first?

题目
请教where do you have to put your bag in the locker first?
a.before you walk into a big supermarket like carrefour.
b.when you walk into a bookshop.
c.when you walk into your school library.
d.when you walk into your school
答案
选a,问你在什么地方需要你先寄包?
a 当你进入像家乐福这种超市之前
b 当你进入书店时
c 当你进学校图书馆时
d 当你进学校时
显然a为正确答案
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