单选题
The ______ friend was exposed in the end to be a hidden rival who had been plotting against the company's marketing in Hong Kong.
【正确答案】
A
【答案解析】[解析] 空格处意为表面上的朋友。professed意为“佯称，伪称，假装”，如，professed neutrality(伪称中立)。announced意为“宣告，通告”，exclaimed意为“呼喊，惊叫”；declared意为“断言，声明”，announce、exclaim和declare的过去式都不能用作形容词作定语。