Why does Mr. Montalbo recommend adding a curtain? A. It would act as a noise barrier B. It would help keep in dust C. It would serve as a visual screen D. It would improve safety conditions49/54Why does Mr. Montalbo recommend adding a curtain? It would act as a noise barrier It would help keep in dust It would serve as a visual screen It would improve safety conditionsGiải thíchChọn đáp án C