Don"t speak until ___ to.A．spokenB．speakC．speakingD．to speak
题型：不详难度：来源：
Don"t speak until ___ to.| A．spoken | B．speak | C．speaking | D．to speak |
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答案
| A |
解析
| 这里用过去分词表示被动，这是一个省略句，省略了you are… |
举一反三
The young lady prefers dressing up for a party to ____ by others.| A．be noticed | B．being noticed | C．having been noticed | D．have been noticed |
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