Questions 135~138 refer to the following email.
In the five major cities of our country, a six-month trial among one hundred twentyvolunteer companies in 2021 showed a positive impact on company performance,__135__ and employee wellbeing. Employees working the shortened week __136__less stress and fatigue, plus improved work-life balance and satisfaction. __137__ ,the employees of these companies are keen to make shorter working weeks thenorm. 
We have seen very successful examples everywhere, from non-profits tomanufacturing companies. However, some experts believe there are industries, suchas manufacturing, that may have a more difficult time __138__ to a shortenedworkweek. Although the global movement in support of the four-day week isgathering pace, it is not yet a mainstream work practice.
【題組】135.
(A)product
(B) productive
(C) produce
(D)productivity