Peopletodayarehighlyconcernedaboutthequalityoftheairthey___(breath).

It’s___(reasonable)toexpectpeopletoworkmorethan60hoursaweek.

Ifyouhavetheright___(equip)，youwon’tfindthejobdifficult.

Each student is to give a short___ (speak)to the rest of the class at the end of the semester.

It is essential that you__________any document carefully before signing it.