You can’t borrow books from the school library ______ you get your student card.
A. before B. if C. while D. as
You can’t borrow books from the school library ______ you get your student card.
A. before B. if C. while D. as
A
考查连词。此处意思为你出示你的学生证才可以从学校图书馆借书,before------才---的意思,选A符合。