was expected he failed in the exam.A. ThatB. AsC. WhichD. It

问题补充：

was expected, he failed in the exam.

A. That

B. As

C. Which

D. It

答案：

A. That

(答案→)B. As

C. Which

D. It

解析：as指代下文he failed in the exam.内容，一般位于句首，意思是作为，如同等含义。Which作为引导词只能用在句中，故选B。