Words with Prefixes

What is a student who is studying for a second degree?

What kind of drug can help somebody with an infection?

______________ means impossible to eat.

What kind of oven cooks things particularly fast?

______________ means not having a husband or wife.

_______________ means unable to read or write.

How does a passenger aero-plane normally fly?

_______________ means unable to be replaced.

What word means 'underground railway' in the US and 'underground passage' in the UK?

______________ means fair in giving judgment, not favouring one side.

_______________ means not having a job.

What kind of company has branches in many countries?