B

【答案】B
【详解】
句意：有许多乘客，公共汽车太堵了，公共汽车司机希望一些乘客下车。A. get off下车； B. to get off下车；C. cut off切除；D. to cut off切除；根据There are lots of passengers and the bus is too crowded可知是下车，根据expect sb to do sth希望某人做某事；故选B