(2013·安徽卷)Before you pay a visit to a place of interest, look in your local library ________a book about it.
18. After having gone____-far, I didn’t want to turn back.
17. One of the mottos for the park makes_____clear that science and business can and must work together to build the future.
16. This experiment turned out to be____failure, but, as we know, success often comes after___failure.
15. It is often said that the joy of travelling is________in arriving at your destination___inthe journey itself.
14. – How often do you go swimming? --___________, but usually twice a week.