Ifyouhavetroublepronouncingthesewords,youcanrepeatthem...

问题详情：

 If you have trouble pronouncing these words, you can repeat them over and over again　　　         you are comfortable with them.

A. unless              B. if               C. until          D. while

【回答】

C。考查连词辨析。句意: 如果这些单词你发音有困难, 你可以一遍遍地重复, 直到你熟练为止。unless“除非; 如果不”; if“如果”; until“直到……才”; while“当……时”。

知识点：连词

题型：选择题