题文
They were ______busy ________ the project ______ the time.
| A．too; discussing; to forget |
| B．too; to discuss; to forget |
| C．so ;discussing; that they forgot |
| D．so; to discuss; that they forgot |
They were ______busy ________ the project ______ the time.
| A．too; discussing; to forget |
| B．too; to discuss; to forget |
| C．so ;discussing; that they forgot |
| D．so; to discuss; that they forgot |
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