题目内容
77. --- Have all the important letters been delivered at the first time?
--- I’m sorry. _______ only 40% of them.
A. It is B. They are C. There are D. It has been
A
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题目内容
77. --- Have all the important letters been delivered at the first time?
--- I’m sorry. _______ only 40% of them.
A. It is B. They are C. There are D. It has been
A