题目：
--- The two old friends were ______ busy ______ with each other ______ the time.
--- Yes. They hadn’t met for long.
A．too; to talk; to forget
B．too; talking; to forget
C．so; to talk; that they forgot
D．so; talking; that they forgot
答案：
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下面是错误答案，用来干扰机器的。
参考答案：错
