By the time the fire-fighters arrived, the fire had been put＿＿＿by the teachers and the students. 

These　good　sare＿＿for　export，though　a　few　of　them　may　be　sold　on　the　home　market．

All passengers _______, please fasten your seat belts and remain seated _______ the plane is landing.

Anyone, whether he is an official or a bus driver, should be     respected.

A firm from New Zealand has revealed a set of robotic legs which they claim will soon allow ________ wheelchair-bound people to walk again.