I(tell)youaboutmyplan,butyoustoppedmebeforeIcouldspeak.正确答案是wasabouttotell我觉得也是shouldhavetold是不是两个都可以？？要是我错了，为什么是wasabouttotell

Question

I __________ (tell) you about my plan, but you stopped me before I could speak.
正确答案是 was about to tell
我觉得也是should have told
是不是两个都可以？？
要是我错了，为什么是was about to tell

Answer 1

should have told
我本想告诉你我的计划,但我还没说就被你打断了.
问题补充：
should have done ,是虚拟语气,表示本要怎么做而没做.
这里可能没有这个意思.
用was about to tell 表示过去正要做某事
be about to do sth ,正要做某事或者正打算做某事.
我正要告诉你我的计划就被你阻止了.