It was very __________ of you to let us know you were going to be late.
--- This is my treat and next is yours. How’s that? ---- OK. _______.
Food safety is _____ important, so the government spares no efforts to prevent food pollution.
___ achievement, last week's ministerial meeting of the WTO here earned a low, though not failing, grade.
_______ in a new country, I was scared and feeling pretty anxious.
I ________ to the lecture this afternoon, but I ________ a bit ill.