.He, out of breath ,_____ himself along the street. Perhaps he was badly ill.

---Thank you for your timely help. --- My pleasure. It is hardly      talking about.

Emergency line operators must always ________ calm and make sure that they get all the information they need to send help.

________ of the land in that district(地区) _______ covered with trees and grass.

Please put away your clothes hanging outside. As you know, dark clouds______ heavy rain.