The most obvious reason why computer-based testing is becoming increasingly popular is that it makes tests easier ______.

-- Have you considered _____ your job as a teacher?　 --- Yes. I like the job because a teacher is often considered _____ a gardener.　 

_____ in Paris, the Louvre is one of the world’s largest art galleries. 

The teacher said he needed _____ boys besides his students _____ the classroom. 

—Would you permit me ___________ here?— Sorry. We don’t permit ___________ in the lab.