题目内容
I think you should think twice .Once ______, the decision won’t be easily changed .
| A．making | B．to be made | C．being made | D．made |
D
解析试题分析：句意为：我认为，你应该三思。一旦作出了，决定便不容易改变。once为表条件的用法，引导的部分做状语，其逻辑主语是the decision，与make之间的关系是被动, 故应为done.表被动的含义，所以答案应为D。
考点：考查非谓语动词作状语的用法。
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