the man said that he can't but ——————the house at a low price.A to sell B sell C seling

问题描述:

the man said that he can't but ——————the house at a low price.A to sell B sell C seling
D sold .
哪个正确,为什么?

B can't but do 别无他法,只好这样做.固定用法
请及时采纳,多谢!