The journey has（ ）a few monthsA.taken B.spend C.used D.cost选D物作主语,用costI prefer（ ）home on footA.to go to B.going C.go D.to go 选Dhome是副词,所以不加介词prefer to do sth喜欢做......第一题能说清楚吗？还有prefer doing和prefer to do sth区别it作主语，用takesth作主语，用cost人作主语，用spend没有prefer doing只有prefer doing to doing单独的只有prefer to do sth一种