Question: We really commend them for coming in during the evening and helping out.
They helped out during the end, earning our gratitude.

Answer: yes

Question: Some are handicapped.
Few are differently abled.

Answer: yes

Question: The interpretation of this increase is It is not clear if the increase reflects an increased cost of outsourced engineering or simply the cost of increased intensity of engineering required by today's technologydriven projects and more sophisticated design and construction practices.
The interpretation of the increase is clear.

Answer:
no