问题补充：
During the examination we are required to stay in our seats, keep our eyes on our work, to anyone.
A. instead of speaking
B. rather than speak
C. and not to speak
D. but would not speak
答案：
A. instead of speaking
B. rather than speak
(答案→)C. and not to speak
D. but would not speak
解析：考查并列分句。require sb to do sth要求某人做某事，stay in our seats, keep our eyes on our work和speak to anyone是三个并列的动作，and连接最后一个动作，且不能省略to；选择A项的话，不能要逗号，故选C。
