May / Might / Might be able to / Must / Must be able to
-You haven't eaten anything and it's really late.
- You ___________ (be) really hungry.
must be
-The doctor had a cancelation earlier.
-He ____________ (see) you.
might see
-He's a great dad, always dedicating time to his kids.
- He ________ be a great dad.
must be