“Sir, you ________ be sitting in this waiting room. It is for wo

“Sir, you ________ be sitting in this waiting room. It is for women and children only.”
A、oughtn’t to
B、can’t
C、won’t
D、needn’t
【正确答案】：A
【题目解析】：oughtn't to 不应该；你不应该坐在这间候诊室,这是妇女儿童专用的