He hasn’t slept at all for three days. _______ he is tired out.
_____ , I believe, and you will find Tom is very outgoing.
--- 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.