It is difficult for us to learn a lesson in life __________ we’ve actually had t
题型：不详难度：来源：
It is difficult for us to learn a lesson in life __________ we’ve actually had that lesson. | A．until | B．after | C．since | D．when |
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答案
| A。 |
解析
| until的意思是“直到……时”“在……之前”，如：We always have to wait until the last customer has left. 我们总得等着最后一位顾客离去。 |
举一反三
Many of them turned a deaf ear to his advice, __________ they knew it to be valuable. | A．as if | B．now that | C．even though | D．so that |
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My parents live in a small village. They always keep candles in the house __________ there is a power cut. | A．if | B．unless | C．in case | D．so that |
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The result of the experiment was very good, _____ we hadn’t expected| A．when | B．that | C．which | D．what |
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We shouldn’t s0pent our money testing so many people, most of __________ are healthy. | A．that | B．which | C．what&nze:1bsp; | D．whom |
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In the dark street, there wasn’t a single person _____ she could turn for help.| A．to whom | B．who | C．from whom | D．that |
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