A task of the post office staff is to_ (class) mail according to the places it is to go

At the end of the conference, all the_(participate) were asked to fill out a questiolmaire

_______(safe)needstobeimprovedontherailwaysinthatcountry

Thereisanincreasing_(tend)forwomentohavechildrenlaterinlife

Being a ________(high) motivated lauguage learner, he takes every opportunity to improve his English