题目内容
-________.
-Sorry, I don't know.
A.Have you seen Mr.Smith?
B.Where has Mr.Smith gone?
C.How about Mr.Smith?
D.Hello, Mr.Smith.
.—____
—Sorry, I don't know.
A.Have you seen Mr.Smith? B.Where has Mr.Smith gone?
C.How about Mr.Smith? D.Hello, Mr.Smith.
.—____—Sorry, I don’t know.