As it turned out to be a small house party, we        so formally.
#86499
A
needn’t dress up
B
did not need have dressed up
C
did not need to dress up
D
needn’t have dressed up
推荐题目
He ______ the key, so we ______ into the office.
#88113
A
hadn’t left; can’t
B
didn’t leave; couldn’t have got
C
hadn’t left; couldn’t get
D
hasn’t left; couldn’t get
Helen _______ it if she doesn’t want to. 
#87742
A
doesn’t need do
B
need not to do
C
needs not to do
D
need not do