问题
选择题
I _______ Mr. Li many times already. I'm sure he isn't at home.[ ]
A. will phone
B. have phoned
C. phone
D. phones
答案
答案：B
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I _______ Mr. Li many times already. I'm sure he isn't at home.[ ]
A. will phone
B. have phoned
C. phone
D. phones
答案：B