Table in "advanced fill the blanks"

Hello!

I created an advanced fill in the blancs element, where there are the blanks in a table.  The problem is that the table has 8 columns.

The blanks take so much space (i think have so many "empty" characters reserved) that the  result (the table ) is too wide. 

My question is the following: is there a possibility, to make the blanks smaller?  The right answers have maximum 6 characters, so there is no need, to have such wide blanks.

 

Can You help me?  mtriebler