All the athletes competed _____ each other for gold medals in the Olympic Games.
What a wonder! They've finished ______half of the project in such a short time.
To keep a trade______, they would have to sell less and buy more in the following months.
She likes _______ but she doesn’t like _______ now, because there are too many people in the pool.
He had lost his temper and his health in the war and never found______ of them again.
There are over 58,000 rocky objects in ______space, about 900 of which could fall down onto______ earth.