They when they heard him confess his fault. A. had been surprising B. were surpr

They _______ when they heard him confess his fault.

　 A. had been surprising 　 B. were surprising

　 C. were surprised 　 D. had been surprised

试题答案

C

时间状语是过去时态，主句也应用过去时态，从句中heard是一般过去时态。