题目内容
If you have trouble pronouncing the word, you can repeat it over and over again _______ you are comfortable with it.
| A．unless | B．if |
| C．until | D．while |
C
解析试题分析：句意：如果你在这个单词的发音上有问题，你可以一遍又一遍的重复知道你读顺为止。A. unless“除非”；B. if“如果”；C. until“直到…”；D. while“当…时候”。结合句意，故选C。
考点：考查连词的辨析。
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