The police always take advantage of dogs’ ____ sense of smell to search for something.

-----Have our working conditions improved? ---No, ______than before, I’m afraid.

 This magazine is very __________ with young people, who like its content and style. 

I've heard from a __________ source that many of the workers may lose their jobs because our company is running very badly. 

Lucy has already tried her best. Please don’t be too ______ about her job.