What does this simple rebus mean?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Which part of London exists in France as well ?

Can it be possible to build a house that has all its four walls facing towards the South?

Spot 5 differences in two Christmas tree below:

Solve the puzzle by telling what does below picture means.

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Which wheel of car does not rotate when you turn your car right?

Can you decipher the following common phrase?

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