There … economies since the dawn of civilisation, but as a field of study, economics … only recently?
- )were / was developing
- have been / has developed
- are / has been developing
- were / is developing
- have been / develops
Jawaban: B. have been / has developed.
Dilansir dari Ensiklopedia, there … economies since the dawn of civilisation, but as a field of study, economics … only recently have been / has developed.
Dijawab Oleh : Kunjaw