I have heard a lot of good things about you ________ I came back from abroad.(2013·陕西,18)
The schoolboy regretted _______ after he didn't pass his exam.
The angry boss ________ from the chair and went directly to him.
——Why doesn't he buy you a drink? ——I don't know why, but it isn't _______ he had no money.
We were told that it was our _______ to read the text together.
It ________ that there is no way out of difficulty.