If you can speak English well， you will have a great ____over others while looking for a job.

―The river runs clear.―We all appreciate the importance the local governmenthas_______ the environmental protection.

He always thinks of _______ he can do more for the people

How unhappy your roommate looks! — Yes, but he’s not willing to tell me what it is ____ is troubling him. [ ]

The suggestion they all objected to________to be effective finally.[ ]