Question

Through six _____________ (monthly) of _________________ (researching), he observed the patterns of ______________ (behave) on the tracks. According to him, warning _______________ (systematic) were not making any _____________ (impacting). So, there was a need for _________________ (improve) in the _______________ (vigilant) system.

Answer 1

Answer:

1months, research, behavior, system, impact, vigil.