         Sentence 1: If the “sewing » machine is.  correctly ‘threadéd,. the operator. then lifts.  athe presser foot'a device that tomes down on  either side ofthe “needle to. hold the  cloth‘and, if the needle ii is in i up boston,  Jesherta Nhe’ obi oe         = i, the sewing machine: is:  correctly threaded, it will | begin to. ork on  kee mn, ithout ‘an.operator, "              