(单选题)
______he witnessed and heard made his head swim and his heart thump harder.
A.That
B.Why
C.When
D.What
参考答案:D
参考解析:
考查what引导的主语从句。句意:他目睹和听到的一切,让他头晕目眩,心跳加速。根据句意可知,此处______he witnessed and heard充当made的主语从句,从句中缺少witnessed和heard的宾语,且意为“什么”,因此应填入连接代词What。故选D。
知识点:
