What is it猜猜我是谁

1） I am as light as a feather， yet the strongest person may not be able to hold me for more than five minutes. What am I？

2） Who makes it， has no need of it. Who buys it， has no use for it. Who uses it can neither see nor feel it.

3） What can travel around the world while staying in the corner？

4） There was a green house. Inside the green house there was a white house. Inside the white house there was a red house. Inside the red house there were lots of babies. What is it？

Thinking Puzzle逻辑小谜题

At a restaurant， Mr. Red， Mr. Blue， and Mr. White meet for lunch. Under their coats they are wearing either a red， blue， or white shirt. Mr. Blue says， “Hey， did you notice we are all wearing different colored shirts from our names？” The man wearing the white shirt says， “Wow， Mr. Blue， thats right！” Can you tell who is wearing what color？