In English colleges, classes are often arranged in freer and opener______and many jobs are designed for students.
I’d like to study law at university __________ my cousin prefers geography.
Some students often listen to music _____ classes to refresh themselves.
.—____ when has the country been open to international trade? —1978, I suppose.
I think he is taking an active part in social work. I agree with you ______ .
Experts have been warning _____ of the health risks caused by passive smoking.