题目内容
() 7. —Hi,Mary .
—Hello , Steve.
A. speaks;this is
B. speaking;this is
C. speaking; I'm
D. am speaking; I'm
7. B
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题目内容
() 7. —Hi,Mary .
—Hello , Steve.
A. speaks;this is
B. speaking;this is
C. speaking; I'm
D. am speaking; I'm