a compulsory examination.
compulsory military service.
it was compulsory to attend mass.
the abuse of compulsory powers.
compulsory service system
Education is compulsory in Britain.
obtain free and compulsory education
Is English a compulsory subject?
compulsory education for blacks and browns.
compulsory retirement would interfere with individual liberty.
Compulsory schooling ends at sixteen.
students take three compulsory core units.
Which subjects are compulsory in your school?
the City Council has applied for a compulsory purchase order.
There existed in most territories of medieval England a compulsory and collective pledge system, named frankpledge.
METHODS: Based on the real situation in China, reasons for the inapplicability of compulsory license system for medicine patents were analyzed.
Ophthalmology is a compulsory course of clinical medicine for medical college students.The undiversified traditional teaching method results in unsatisfactory teaching effects.