21．I made a call to my parents yesterday. To my disappointment. of them answered it. (A)either (B)none (C)neither (D)nobody

57. .It can be inferred from the case of the Philippines that (A)the country is Asla’s main source of migrant workets (B)labour exparts lend to a 10% growth of its GDP (C)the outflow of lend to helps solve its social probiems (D)the country Both exports and imports labour force