【they can't afford()a new houseA.to buyB./C.buy】

问题补充：

they can afford()a new houseA.to buyB./C.buyingD.both A and B

答案：

答案选B afford 是及物动词

买得起,担负得起

例如：She cannot afford a new dress.

她没钱买新衣裳.