The computer system ____ suddenly while he was searching for information on the Internet.
I was halfway back to the hospital where the doctor was working Susan caught up with me.
_____ , 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.