Are there any ___ things on the moon?

－I want a room for 20 people to have a birthday party．一Unlucklly there is no one       

Though my grandfather is in his eighties, he is still as _________ as a young man and hates sitting around doing nothing all day.

 Whenever a patient needs an injection of Penicillin, the doctor does need to make sure whether his patient is ___ to the medicine.

 _____ shouldn’t have part-time jobs because they are too young.