You（ ）about your math exam result. You have got the highest score in our class.
A.正确答案Bmustn't have worried
B.needn't have worried
C.haven't needed to worry
D.didn't need to worry
You（ ）about your math exam result. You have got the highest score in our class.
You（ ）about your math exam result. You have got the highest score in our class.
A.正确答案Bmustn't have worried
B.needn't have worried
C.haven't needed to worry
D.didn't need to worry
