One passenger was pregnant.So one dead body(of the unborn child) was inside her.

3 Sons and 4 Daughters

The man fired the night watchman because he saw the Dream means he slept during the duty.So he was fired for neglecting the duty.

To pass through the door one of  the letters in the name of the item should be  appear twice continuously.

Like in Apple the letter ‘p’ appears twice continuously

in Balls the letter ‘l’ appears twice.

with same logic guava does not pass through the door,But Carrot will pass through the door.

Third room is the safest because the lions who had not eaten for 3 years will  be  dead already.

He is playing baseball game

They are part of a triplet or etc. Technically these two women can be part of set containing three or more identical children born for the same parents.

Hello World (Type the numbers in the old keypad mobile with numbers and letters,pressing the number 4 two times  corresponds to letter H,3 two times means E and so on.. )

Water

They asked the lorry driver to remove some air from all the tires of the lorry.This reduced the height of the lorry and made it to pass  the bridge