The best way to explore _______ countryside is on _______foot.
--- Would you like to join us?--- Sorry, but I am not _______ as any of you.
He made _______ an excuse for his failure in order to avoid _______.
—Jim, can you work this Sunday?—________? I’ve been working for two weeks on end.
We need to get to the root of the problem______ we can solve it.
Albert Einstein was born in 1879. As a child, few people guessed that he a famous scientist whose theories would change the world.