单选题
He said he had great______ in his secretary; she would do the right thing.
【正确答案】
A
【答案解析】解析：confidence n．信仃，信心(have／lack/put confidence in sb．/sth．；do/say sth．with confidence)。have(a)knowledge of对……懂，知道，了解。have(an)acquaintance with认识，熟悉(make sb．'s acquaintance／make the acquaintance of sb．结识，认识某人)。have information about／as to对……了解，知道。