Please capitalize where necessary: cut the thread and pull through remaining sts. sew tight.
A: Cut the thread and pull through remaining sts. Sew tight.

Please capitalize where necessary: this was the kick off to his present career.
A: This was the kick off to his present career.

Please capitalize where necessary: spangle grass, wild oats, northern sea oats chasmanthium characteristics
A: Spangle grass, Wild oats, Northern Sea Oats Chasmanthium characteristics

Please capitalize where necessary: a marching drum kit is served by several musicians, each with his instrument (bass drum, snare drum, cymbals etc.).
A:
A marching drum kit is served by several musicians, each with his instrument (bass drum, snare drum, cymbals etc.).