问题补充:
You me, but since you have,I’ll keep it secret from others.
A. needn’t have told
B. didn need to tell
C. wouldn have told
D. couldn have told
答案:
(答案→)A. needn’t have told
B. didn need to tell
C. wouldn have told
D. couldn have told
解析:句中since you have暗示你已经告诉我了,所以用 needn’t have told表示:本不必做。