Nouns and Verbs in Two-Blank Sentences Practice Test

The company stopped production for a few days to figure out what was going wrong in the robotic assembly line and thought they had fixed the issue, but the problems unfortunately began to                        soon after the                     , making it apparent that no solution had been found.

Choose the word or set of words that best completes the following sentence.

Since there is not a strict                      between hours of teaching and the monetary value of that time, it is often difficult to                      the appropriate pay for educators.