Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
By the time he was twelve, Edison __________ to make a living by himself.
I can’t tell you _____ way to the Wilsons’ because we don’t have _____ Wilson here in the village.
Many websites have been _______ to help people study foreign languages.
Although I have studied Chinese for nearly two years, I still have some difficulty _______ myself.
I love animals and that’s the reason ______ I hate the people who kill wild animals for money.