they were waiting to buy tickets __the last train横线处介词是用 for /to/ with/ of的哪一个 为什么

问题描述:

they were waiting to buy tickets __the last train
横线处介词是用 for /to/ with/ of的哪一个 为什么

for

for
表目的,他们在等待买最后一班火车的票