单项选择题
My supervisor, gentle and friendly, made me feel at ease from the first meeting with him.（）
A. at large B. at length C. at random D. at home
单项选择题 Facebook’s top executives are eligible for twice-a-year bonuses of up to 45 percent of their base salaries.（）
填空题 To keep your sensitive information safe, your job is to create a password that is very （）.
单项选择题 13（）
