---Thank you for your useful advice.---________________.
We may meet all kinds of difficulties in the future, but we should be confident enough to any challenge.
Millie is quiet and modest and easy________________.
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.