"MS" is typical. Though, if you want to be irritating or "cute", use "M$".
ID is the abbriviation of Identification. It is already an abbriviation, therefore it does not have one of its own.
the abbriviation for inches is in. it couldn't get easier than that. :)
rte.
The answer is MO
TX
H2o
SF
KY
NV
Thurs.
MA
It is g.