---Mr. Black, I find ______ difficult to play the piano well. ---Oh, I think you just need to practice more
I’m afraid I can do nothing about it. All that can be done ____.
I had my lunch half an hour ago. I’m not _____ hungry.
_____ you _____Huangshi since 10 years ago?
I ______my homework in my study the whole morning. I went nowhere.
____ was cooked by Mum. It was so delicious.