As it turned out to be a small house party,we ___ so formally.

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

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...