fill in the blanks with appropriate verbs 
every officer -- to take special training for 6 months. each day -- a different experience.  traffic officers -- to spend hours standing in the sun. traffic management -- is a stressful job. there -- also some amount of danger in the job. all officers --to stay in touch with each other. a traffic cop often-- to step into quarrels , he -- to ensure that traffic moves smoothly and most of us -- not aware how difficult this job is.