Solution:

Suicide

Solution:

The two babies are two of a set of triplets(or even more)

Solution:

SIX - 9 (IX) = S
9 (IX) - 10 (X) = I
40 (XL) - 50 (L) = X

=> SIX

Solution:

Yes, a Palm Tree.

Bonzai can be logical solution

Solution:

Liquid state

Solution:

Because seven was hungry and 'seven ate nine' (7, 8, 9).

Solution:

Smiles (there is a mile between the two S's)

Solution:

Typewriter

Solution:

No time at all it is already built

Solution:

No