30. When he was only thirty years old, he had already experienced______most people only experience when they are much older.

25. Let’s go a little faster, _________we’ll never get there on time.

22. Take the spare batteries with you_________you need them.

How long is it ________________ we last had a picnic together?

Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply.

—You can’t imagine ____ fantastic fun web chatting is.
—Really? But it may cause a lot of trouble sometimes.

There is no excuse, ________, for hurting her feelings.

. Our town has dozens of factories,  ___________      several saw mills.

— Is that the country clinic you often refer to?
— Right，just the one_________you know my father used to work for 10 years

Many people in the city wonder _____the city officials have the information they need to solve the problem.