题干
—Hello, may I speak to Sam , please ?
—______ .
A：Who are you ?
B：What’s wrong ?
C：This is Sam speaking.
D：He is Sam.
答案(点此获取答案解析）
C
—Hello, may I speak to Sam , please ?
—______ .
A：Who are you ?
B：What’s wrong ?
C：This is Sam speaking.
D：He is Sam.
