—I think everyone has a role to play in making the planet a better place.—Yes, indeed. ______.

I thought Jim would say something about his school report, but he ______ it. 

Evidence obtained from observation and experiment is often used to _____ a scientific theory.

Was it in the school reading room _____ you found the missing book?

________ the numbers in employment，the hotel industry was the second largest industry in this country last year.