Helen has _______ beef of us all.
She has finished typing but she doesn’t know _______ next.
The kind teacher devoted all her time ___________ her students.
— It’s dangerous to walk across the street carelessly. — You’re right. We can’t be careful while crossing the street.
It’s quite clever ________ you _______ out the problem.
---Tom, you play football in the street. ---Sorry, I do it again.