一个高中英语单选题---高手进Soon it became apparent that we were getting

一个高中英语单选题---高手进
Soon it became apparent that we were getting nowhere.I began to picture the rest of the day in the forest,without food or drink.We had walked about ten miles.But Beans seemed totally unconcerned .The sniffing and exploring was going well for him.
Finally,we（45）_____ a crossroad near a highway.Lady Luck suggested I should turn left.We did and shortly reached a cottage beside a field.I knocked on the door and explained my situation to an old man.He laughed and then drove us home.
45、A：left for B：went off x05 C：came to D：drove toward
1、为什么A答案不对.我想知道原因.
2、drive toward是短语吗,