упорно трудиться(on sth. – над чем-л. • “When you’re awarded a bursary, it makes you work harder than you normally would,” she says. “I’m not going to waste any time when I’ve got that concentrated period of time.” (irishtimes.com)ART Vancouver); упорно работать(The staff work hard to make sure everything runs smoothly. – чтобы всё прошло гладкоART Vancouver)
