I think ”I am sure ”he cared for me at first. 
I am certain that he did care for me at first.
I am sure that he never did care for me
The judge will decide in November.
The girl is helping the men sell things.
Pilots are flying.
CIOs of the different divisions don't work together for any reason even if they're pursuing shared IT products and services.
They did not speak to any widespread social concerns.
Even though they are not reliable, they do get the job done.