题目：
You ___ me, but since you have,I’ll keep it secret from others.
A．needn’t have told
B．didn't need to tell
C．wouldn't have told
D．couldn't have told
答案：
答案：A
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。
You ___ me, but since you have,I’ll keep it secret from others.
A．needn’t have told
B．didn't need to tell
C．wouldn't have told
D．couldn't have told
答案：A
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。
