34.What rises in the morning and waves all day?

　　35.What is pronounced like one letter，written with three letters，and belongs to all animals?

　　36.Why can you tell clocks are shy?

　　37.What is easy to get into but hard to get out of?

　　38.What cannot be seen but only heard，and will not speak unless spoken to?

　　39.What word can you make shorter by adding two letters to it?

　　40.What part of a clock is always old?

　　Keys (IV)

　　31.It was not raining.

　　32.In a dictionary.

　　33.None.Because it has been taken out already.

　　34.A flag.

　　35.Eye.

　　36.Because they always have their hands in front of their faces.

　　37.Trouble.

　　38.An echo.(回声)

　　39.Short.

　　40.The second hand.

　　Riddles (V)

　　41.What person does every man take his hat off to?

　　42.What can you swallow than can also swallow you?

　　43.Which three letters can frighten a thief away?

　　44.What appears once in every minute，twice in every? moment， but not once in thousand years?

　　45.What would you say if you saw a ghost(鬼)?

　　46.Which is the left side of a cake?

　　47.A police saw a truck driver going the wrong down a one - way street，but paid no attention to him. Why ?

　　48.Where should the milk be best stored ?

　　49.What is the hardest thing about learning to ride a bicycle?

　　50.What always has one eye open but can’t see?

　　Keys (V)

　　41.A barber.

　　42.Water.

　　43.I C U

　　44.The letter M.

　　45.I would say nothing and run as fast as possible.

　　46.The side that isn’t eaten.

　　47.The truck driver was walking there.

　　48.In a cow.

　　49.The ground.

　　50.A needle.

　　Riddles ( VI )

　　51.What goes all over the house，but touches nothing?　　52.What belongs only to you and yet is used more by others than by yourself?

　　53.Which letter of the alphabet separates Europe from Africa?

　　54.Why is a river rich?

　　55.I have cities but no houses，forests but no trees; rivers but without water; what am I?

　　56.A man jumped from a plane，but there was nothing? wrong? with him. Do you know why?

　　57.In a train，a woman saw other peoples’ faces were dirty. What would she do，do you know?

　　58.Why did John say he didn’t know where the sun was?

　　59.Where does a person stay for the longest time in his life?

　　60.Why does Tom’s mother go to work by plane every day?

　　Keys ( VI )

　　51.A sound or voice.

　　52.My name.

　　53.The letter "C".

　　54.Because it has two banks.

　　55.A map.

　　56.Because the plane is on the ground.

　　57.She would close her eyes，of course.

　　58.Because it was at night.

　　59.In bed.

　　60.Because she works in a plane.