I didn’t have enough money _______ a taxi,so I had to walk _______ home

I didn’t have enough money __for_____ a taxi,so I had to walk ___/____ home.
我没有足够的钱乘出租车,因此只有步行回家.
home是副词,前不加介词.
for a taxi 凭借出租车.不能用take .因为前有动词have,后面不能再跟动词.要用也是taking.
也不能用by；by taxi.中间不加不定冠词a.