10. 【2020 •温州市】Little Mary says good night to her parents________ she goes to bed every day.
A. if B. until C. before D. unless
【答案】C
【解析】句意：小玛丽每天睡觉前都会跟父母说晚安。考查连词辨析。if如果；until直到……；before在……之前；unless除非。根据句中“says good night to her parents”和“she goes to bed”可知，此处是“睡觉之前向父母说晚安”。故选C。