The boss was accused of having a ______ against his female employees.

In English colleges, classes are often arranged in freer and opener______and many jobs are designed for students.

Although we had told them not to keep us waiting, they made no _________ to speed up deliveries.

I hope my teacher will take my recent illness into _____ when judging my examination.

Ancient Greeks were responsible for many of the _______ in science and other fields．