问题
单项选择题
Are the Williams here yet?（）
A.No, they don't.
B.Yes, he is.
C.No, he is not.
D.Yes, they are.
答案
参考答案：D
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Are the Williams here yet?（）
A.No, they don't.
B.Yes, he is.
C.No, he is not.
D.Yes, they are.
参考答案：D