--They were busy with each other the time. --- How cool the guys are !A．too; to
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--They were ________ busy ________ with each other ________ the time.
--- How cool the guys are !
| A．too; to talk; to forget | B．too; talking; to forget |
| C．so; to talk; that they forgot | D．so; talking; that they forgot |
试题答案
D
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