Victor apologized for __________ to inform me of the change in the plan. A．his being not able B．him not to be able C．his not being able D．him to be not able
| C |
| 句意是：Victor为他没能通知我计划的变动而向我道歉。这里用动名词做for的宾语，动名词的否定在动名词前加not，his在这儿做动名词的逻辑主语。 |
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