问题
选择题
— Why is the librarian looking so hard at me?
— You ____ to read aloud in the reading room
A．don’t suppose
B．haven’t supposed
C．are not supposed
D．were not supposed
答案
答案：C
根据句子意思，应选用be supposed to"应该做……、被要求做……"，故排除选项A、B；分析上文情景，句中动词使用现在时形式，强调现在的状态，所以，再排除选项D。