Solution:

Lucky days are here again.

Explanation:
Lucky + Day + s + R + H + Ear + Again (Flower represent lucky symbol)

Solution:

FORREST GUMP

Explanation:
FOR (four [o'clock]) + REST (person lying in bed) + GUMP ([bubble] gum + p)

Solution:

16

Explanation:
9 [1x1] squares
5 [2x2] squares
1 [4x4] square
1 [4x4] square

9 + 5 + 1 + 1 = 16 squares.

Solution:

Spiderman

Explanation:
Spy + derm (perm - p + d) + an(ant-t)

Solution:

It's shown in the picture below.

Solution:

It can be done as shown in the picture below.

Solution:

Image C

Explanation:
If we add one matchstick to any other image, it forms a full-length capital letter.

Solution:

It can be done as shown in the picture below.

Solution:

Tank-5

Explanation:
This is a variation of Which Tank Will Fill First Brain Teaser but in this puzzle connection between tank-5 and tank-2 is closed so water will go into tank-5 from tank-1 but not go to tank-2. Therefore tank-5 will be filled first.

Solution:

7

Explanation:
8th is bald man head, check the video below.