Having a large family to support, Mr. Johnson had to work______ in the evening. [ ]

A. four another hours            

B. more four hours    

C. other four hours               

D. four extra hours

驶近没有人行横道的交叉路口时，发现有人横穿道路，应怎样做？

A．减速或停车让行

B．鸣喇叭示意其让道

C．抢在行人之前通过

D．立即变道绕过行人