Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
When the expression first came into being, people refused to use it but _____ they began to accept it.
On hearing the sound, the birds flew away in every ________.
Punishments became more severe(严厉的), but he remained _________, that is to say, nothing could change his mind.
You’d better ________a few hours to practice your spoken English, which you can learn from.
One of my friends is ___ leader of his department, which is playing ____ important part in the company.