“thanks” is polite when someone has done you a favour, but saying it too often is quite another thing.
— Alvin, are you coming with us?— I'd love to, but something unexpected ________.
Hearing the bad news that her father was injured, she into tears.
Our daughter’s wedding is an important occasion and we should .
The reform was carried out smoothly the established policy of the country’s development.
What's the , in your opinion, of helping him he doesn't make an effort to help himself?