Crossword Puzzle Keep working hard

Clue: Keep working hard

Hard-working, so-so student (PLODDER with 7 letters)
Hard-working bug (ANT with 3 letters)
Hard-working Alger (HORATIO with 7 letters)
Singer with the so-called "hardest-working legs in show business" (TINATURNER with 10 letters)
Hard-working simian (GORILLABORER with 12 letters)
Hard-working six-footers? (ANTS with 4 letters)
Working hard on (TOILINGAT with 9 letters)
Ones working hard during crunch time? (ABS with 3 letters)
The hard-working girl (TILLIETHETOILER with 15 letters)
Hard-working boats (TUGS with 4 letters)