Hi all,
I'm back from a loong holiday :-) Now I'm teaching English again, and I'm running into trouble... At the school I teach (Dutch school) we use a book that's not always as clear as it should be. Even I don't always know the answer 
So, we have the following sentence:
How come you didn't let / haven't let me know about her accident?
The pupils have to choose whether to use the past simple or present perfect. Honestly: I have no clue what to do with this sentence. To me, it sounds wrong, no matter which one I choose. I'd say: How come you didn't tell / haven't told me about her accident? But then, which one is right, or are they both right?
Hope you can help...
Vince