Suzy was making a snowman Kitty was standing beside her.A. whenB. whileC. untilD. and

问题补充：

Suzy was making a snowman Kitty was standing beside her.

A. when

B. while

C. until

D. and

答案：

A. when

(答案→)B. while

C. until

D. and

解析：

试题分析: 句意：苏济正在堆雪人而凯蒂正站在她旁边。 when当……的时候；while而（连接并列句），当……的时候 （引导时间状语从句）；until直到， and和。根据语境可知是并列句，故选B