I can’t stand _______ when people litter around in public places.

—How many computers are there in the room? —________．Some workers moved them to another place just now．

Berners-Lee made       possible for everyone to use the Internet, not just universities and the army.

Jane seems strange, I find          hard to get along with her.

To her joy, Della earned first the trust of her students and then ______of her colleagues.