Open the T109_5.dwg in your personal folder and create the boundary LINEs for the missing section view as shown.
use tracking techniques ONLY.
do NOT use construction lines
do NOT use Fillet, Offset or Trim commands.
hatching is not required.
Open the T109_6.dwg in your personal folder and create the missing top view as shown.
use tracking techniques ONLY & use appropriate layers.
Open the T109_7.dwg drawing in your personal folder and complete the side, auxiliary & profile views as shown below.
there is sufficient information in the existing geometry and in the 3D sketch below to complete these three views.
use tracking techniques along with Parallel & Extension osnap tools as much as possible to complete these views.