问题
选择题
—How much are these green bags?
—______[ ]
A. They are 50 dollar
B. They are 50 dollars
C. It's 50 dollars
D. It is 50 dollar
答案
答案：B
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—How much are these green bags?
—______[ ]
A. They are 50 dollar
B. They are 50 dollars
C. It's 50 dollars
D. It is 50 dollar
答案：B