In some parts of London, missing a bus means _______ for another

In some parts of London, missing a bus means _______ for another hour.
A、waiting
B、to wait
C、wait
D、to be waiting
【正确答案】：A
【题目解析】：mean to do 打算做，mean doing 意味着。句意为：在英国的某些地方搭不上公共汽车意味着要再等一个小时。