问题
选择题
The company has a free long-distance telephone number_____ customers may call with any questions they have about the products .
A．when
B．so that
C．while
D．as
答案
答案：B
本题考查连词。When当……时， so that以便于，while然而， as由于，如同。
句意：这家公司有一个免费的长途电话号码，便于顾客们拨打询问有关产品的问题。so that引导目的状语从句，选B。