【题目】The speaker raised his voice _____ make himself _____ by the listeners．
A．so that; heard B．in order to; hearing
C．so as to; heard D．to; to be heard
在线课程【答案】C
【解析】
试题分析：so that(以便，为了...）引导状语从句，显然后面不是一个完整的句子。所以在BC两项选，有因为make oneself done(使自己的动作被别人...）句意：讲话者提高嗓门，这样就可以使自己被观众听到。