1) Did work with 2) Employed busily 3) Engaged in a trade 4) Exerted 5) Kept busy 6) Like some toilet paper 7) Performed diligently 8) Practiced 9) Practiced a trade 10) Practiced actively 11) Practiced as a trade 12) Practiced diligently 13) Pursued steadily 14) Ran a ferry 15) Wielded 16) Worked 17) Worked at 1) Ran 
• imp. & p. p. of Ply. • (imp. & p. p.) of Ply
Plied imperfect & past participle of Ply .