Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Can you guess the name of the month by looking the below rebus ?

Count the squares in the matchstick puzzle below?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What does this rebus mean?

O
N
C
E
TIME

Which country gets ill every time?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.