题目内容
－Hello, Mary! This is John. You must know why I _________ you.
－Oh, hello, John! I've waited for this call since last month.
A. called B. am calling C. was calling D. have called
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题目内容
－Hello, Mary! This is John. You must know why I _________ you.
－Oh, hello, John! I've waited for this call since last month.
A. called B. am calling C. was calling D. have called