Multiple answers for text entry freeform questions.

Hi,

I'm in the process of trying to create some worksheets that need to be in text entry format.  However, some questions are for example 3 marks but need to be correct if only 1 is answered (so basically you can get 1,2 or 3 marks).  However when doing this i can only seem to be able to allow it to give 3 marks, regardless of how many of the correct answers are used.

For example a question like list 3 months; there's 12 possible answers there but its out of 3 so would need to move to the next questions if either 1,2 or 3 were correct.

Does anyone know how to do this?  Or if you can?

Thank you, sorry if this makes no sense I'm' quite new to articulate

Look forward to hearing your responses!