考博考试

【单选题】 The examination has been cancelled. You ______ all that review, after all.
A．didn't need to do
B．needn't do
C．needn't have done
D．needn't to do

网考网参考答案：C
网考网解析：
[解析] 本句的意思是“考试已经被取消了。毕竟，你本不需要做那么多的复习工作。”needn't have done意为“本不需要”，表示与过去事实相反。因此正确答案为C。 查看试题解析出处>>