Solution:

Tennis shoes

Solution:

BACK

All the others can also be read backwards as proper words.

Solution:

They all read the same rightside or upside down.

Solution:

Each word has 3 consecutive letters of the alphabet-
couGHIng (GHI)
thiRSTy (RST)
DEFiant (DEF)

Solution:

Neither, the accountant was his sister.

Solution:

7 up cans

Solution:

No time at all it is already built

Solution:

What

It stated 'WHAT' was the father's name.

Solution:

If you zoom in, you'll actually notice that the building on the left is closer. The highly perceptive person who noticed the satellite dish was right all along!

Solution:

He was watching an emotional movie where an old lady died.