My sister is _______ about what she eats, otherwise she would not be so thin.
He spent too much time talking on _______ phone while we were all busy at _______ work.
— I really don’t know how to thank you enough. — _____.
While I was making the model plane,my little nephew kept asking me questions with great ______ .
She is a quiet girl at school,but sometimes she _____ be very naughty.
— Did a letter come for me this morning? — Yes. _____ came for you.