----__________ hard work you have done! ---- It’s very kind of you to say so.
---He never stays up late at night, _____ he?---_________. He usually does his homework till midnight.
When she found the clothes on the playground, she at once.
The man said that he was ____ to buy this expensive house.
It is very kind ____ you to help me with these maths problems because it is very difficult ____ me to work them out.
____ should be allowed to drive.