Question

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

Answer 1

C

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。