The 2016 Summer Olympic Games will be held in Rio de Janeiro, Brazil, which becomes the first city in South America _________ Olympics.
He got completely _____ when he saw both Lucy and Lily, who are twin sisters.
--- Shall I open the window to let some fresh air in?--- No, _____
It ______ at the crossroads ______ he was killed in the accident the other day.
A good idea just ______ me — Let’s go swimming.
Only ______ a human being.