How to evaluate the _______ these people made to helping strengthen the country is still _______. Opinions are divided.

She bought a digital camera online__________ she saved a lot of time.

Did you see a boy in blue pass by just now—No, sir. I ______ a magazine.

I met a good friend of mine while I _____ on the street.

Have you heard about that fire in the market?—– Yes, luckily no one ______