tryI'll try to call her again.
endeavourUKEngineers are endeavouring to locate the source of the problem.
seekformalThey sought to reassure the public.
battleHe was battling to fix the roof in the rain.
striveWith limited resources, they are striving to make the school a better one.
struggleI've been struggling to understand this article all afternoon.
go to great lengthsShe knew that her parents would go to great lengths to see that she got a good education.