He was so angry at all _____ I was doing _______ he walked out.
You will succeed in the end ________ you give up halfway.
It’s very to play Chinese chess with old friends at home.
Could you_____ me this book please, Daniel?— Sorry, but I_____ it for only half an hour. I haven’t finished it.
He is a very hard-working student.—.As far as I know, he often burns the midnight oil.