问题
选择题
He decided not to say anything at the meeting unless_________.
A．asking to
B．to ask to
C．asked to
D．ask to
答案
答案：C
题目分析：考查非谓语动词和省略。He与ask之间是动宾关系，即“让他说”，应该用被动，排除A、B、D；句意：他决定在会议上保持沉默，除非被邀请才讲话。unless后省略了he was asked to say something。故选C。