A.He has been in the army for 19 years.B.He joined the army at the age of 19.C.There are 19 armchairs in the room.D.He has found the armchair.
A.He has been in the army for 19 years.
B.He joined the army at the age of 19.
C.There are 19 armchairs in the room.
D.He has found the armchair.