As it turned out to be a small house party,we ___ so formally.needn't dress updidn't need have dressed up didn't need dress upneedn't have dressed up还有“as it turned
问题描述：
As it turned out to be a small house party,we ___ so formally.
needn't dress up
didn't need have dressed up
didn't need dress up
needn't have dressed up
还有“as it turned
答
由于这只是一个小小的家庭聚会,我们本来不需要穿的这么正式.
选needn't have dressed up
本来不需要打扮，表与事实相反。
as it turned out
turn out 事实证明；最终是...
答
我选C
个人觉得还是用过去式，由于那只是一个小聚会，我没就没有穿的这么正式。
B和D好象没有见过这种用法，NEED后面根本就不可以接完成时（我好象没见过）如果选B那D也可以选，请参考
答
As it turned out to be a small house party,we ___ so formally. 答案：needn't have dressed up didn't need have dressed up 和 didn't need dress up 肯定错误.因为有didn't ,need 肯定是实义动词,后面必须...