Solution:

The vowels in order (A tEnnIs cOUrt).

Solution:

The letter 'S'

Solution:

The Letter "C".

Solution:

Selfie
Explanation:
: Selfie = is six letter word
: Self = The first four letter is me.
: e = The second and last letter are the same.
: fee = The fourth second and last letter are payment.

Solution:

I am Spice

Explanation:
Spice is hot if you remove first two alphabets then it will become "ice", which is really cold.

Solution:

A pack of cards.

Solution:

I am a tea bag.

Solution:

A Spider

Solution:

A pair of shoes

Solution:

It is an hourglass.