餐厅销售记录的统计工作往往由销售人员，即餐厅服务员或（）担任。
A、厨师
B、餐饮部经理
C、餐厅经理
D、收银员
参考答案：D
It is said that many kids are worried about the year 2012, ____they think the earth will be destroyed
by disasters. [ ]
A. when
B. where
C. as
D. which
—We can use QQ to talk with each other online.
—Really? Could you please show me ______ it? [ ]
A. how to do
B. what to do
C. when to do
D. why to do
