They’re ________little sheep __________ they should be looked after well.

---- Could you tell me __________ ? I’m going to visit him. ---- Sorry, I don’t know.

Scientists study ________ human brains work to make computers.       

As many as five courses are provided, and you are free to choose _____ suits you best.

After travelling around the world, I found New Zealand to be closest to _________ I thought a person should spend his years after retirement.