Write of the plural form of the following words :
1.Moss
2.Life
3.Goose
4.Memo
5.Species
6.Brother-in-law
7.Series
8.Movie
9.Giraffes
10.Sticker
11.Base ball
12.Taxi
13.Army
14.Monster
15.Ray
16.Focus
17.Criterion
18.Ellipsis