The computer system ____ suddenly while he was searching for information on the Internet.

I think it’s impossible for us to work out the plan in just two days. It’s too difficult.—You’re right. We can’t be _______ careful and hard while working on it.

The boy was so tired that he fell asleep _____________ his mother could take off his clothes

for our dreams, as the principal addressed at the graduation ceremony, offers us a sense of belonging．

Few countries the independence of that country.