CAN'T (%)
MUST (%)
Mary feels that Marti MIGHT not be her baby.
Her baby MUST be with the other family.
MAY/MIGHT (%)
Now she knows this CAN'T be her baby.
People MAY think that the doctor isn’t a good doctor.
99% POSSIBLE
50% POSSIBLE
I'm sure it's true.
I'm sure it's not true.
0% POSSIBLE
I don't think it's true.
I think it's true.