Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
—What has made him upset recently? —_______ alone to face a troublesome milk case.
When he realized the police had spotted him, the man _______the exit as quickly as possible.
—Where is Tom? —Well, he______ you_______ here.Otherwise he would come down right now.
Our bad living habits will destroy the earth.Only by changing ______ we live can we save the earth.
---I don't feel like going out. Why don't we just stay home and watch TV instead? --- ____You promised to take me out for dinner and to the theatre on my birthday.