Modern equipment and no smoking are two of the things I like working here. But whether to

问题补充：

Modern equipment and no smoking are two of the things I like working here. But whether to stay or leave is .

A. with; on you

B. about; up to you

C. at; up to you

D. over; beyond you

答案：

A. with; on you

(答案→)B. about; up to you

C. at; up to you

D. over; beyond you

解析：考查介词用法。About 关于…；be up to sb 由某人决定；句意：现代化的设备和禁止抽烟是我喜欢在这里工作的两个事情。但是留在这里还是离开由你来决定。故B正确。