For the people out there that do not have good soldering skills there is a silver based epoxy you can use to rebuild the pads with. It will adhere to the circuit board, conducts electricity well and can be soldered to. Expose the trace for the pad make sure the epoxy is touching the trace. You can attach what goes on the pad now for a no solder fix or let it cure and then solder the component to the new pad. It is available here.
Once copper solder pads have lifted off the substrate, there's usually no way to get them back on.
Your best bet would be to carefully try to scratch off some of the solder mask on top of the traces leading to the missing pads. Once the copper traces are exposed, you should be able to either solder in a short shim wire or blob enough solder to connect the trace with the corresponding pad.
If you have a multimeter, you can use its continuity tester function to check the repair and make sure your solder joints are working. Depending on how much of the solder joints are exposed, you may want to add something that will insulate them from other exposed pads to avoid a short.
Work carefully, methodically, and slowly, and it should be fixable!