Though he is in his late sixties, the well-known biologist begins each day ____ a sense of adventure and a sense of curiosity.
I really you for your way of making decisions.
These changes may cost quite a lot, _____ they will save us money in the long run.
The couple had quarreled all time before they their engagement
I am sorry I can’t spare any paper for you, for, you see, I have _____ myself.
Obama was elected ____ first black president of the United States four years ago and has been elected _____ president again for the next four years.