أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
a) Cameras and rolls of film. b) Gas and motor oil. c) Margarine and butter. d) VCRs and video cassettes.
C. Margarine and butter. ( Substitute goods)
c) Margarine and butter.....
A. cameras and rolls of film