你能猜猜视频里出现的这些词是什么意思吗?"book" here means ___________
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"single room" means ___________
A. 单人间
B. 单身狗的房间
C. 一间房
What is "ID"?
A. 驾照
B. 身份证明
C. 银行账户
"upgrade" here means ____________
A. 上坡
B. 降档
C. 使升级
"Big Apple" refers to ____________ in the United States.
A. New York City
B. San Francisco
C. Boston