Seeing the happy __________ of children playing in the park, I'm full of joy and confidence in the future of our country.
Do you have any difficulty ________?
The policeman warned the driver ________ so carelessly.
You can never know ________ when she received our nice birthday presents.
I don’t like the way ______you speak to him. Which the following answer is wrong?
---What can I help you, sir? --- I’d like to have this watch_______.