英文問題(急)

After a while he asked her in and without her notice , he tied her up and locked her inside the storeroom , where she saw her grandmother .
He threatened to kill them and asked them for the home number , meanwhile , he made a call for ransom and left the apartment for food .
Before he left , he warned them not to try to escape if not he would kill them . After hearing the key-turning sound , we shouted for help but to no avail.

THIS IS ALREADY 難...BUT I TRY TO HELP YOU LA

After a while he ORDERED her in and SUDDENLY, TYING her up and FASTEN her up inside the CELLAR, where she saw her grandmother.
He threatened to SLAUGHTER them and asked them for the home number, meanwhile, he made a call for ransom and left the CLOSET for RELIEF.
Before he DEPARTED, he CAUTIONED them not to MAKE ANY ATTEMPT to escape, OTHERWISE, he would EXECUTE them. HEARING the key-turning sound, we YELLED for help but to no avail.

HOPE THIS MEETS YOUR REQUIRMENT AS I CAN ONLY HELP YOU TO CHANGE SOME WORD WITH SIMILAR MEANING~