(~s)
A ~ is a medical test which women have to find out if they have become pregnant.
N-COUNT
(~s)
A ~ is a medical test which women have to find out if they have become pregnant.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012