As soon as the man walked into the room ~he ______ his heavy coat and sat down.

Could we finish the project according tothe schedule—I doubt that The problem remains ______we can get financial aid within this week

Do you know –They will help us do lots of work so that we will have more free time

Several companies are__________ each other__________ a contract（合约）.[ ]

Having __________ no-meat day would be a good way ofencouraging ___________ low carbon life-style.