Crossword Puzzle x1 unit 1Online version fist exercise unit 1 by Endika Petuya 1 ist use to tighten or loosen nuts 2 it used with energy to sand 3 it use to cut wire 4 it use to drill 5 it use to drive nail. 6 it use to file things 7 it use to cut many things 7 6 1 5 4 3