all_was needed was one final push to close the dealA,that Bwhat Cthere Dwhich

all_was needed was one final push to close the deal
A,that Bwhat Cthere Dwhich

选择A 这里是定语从句 先行词是all 后面要用定语从句而非宾语从句或者主语从句,排除B what
Cthere 而且all当先行词只能用that

选A 是个定语从句 all做先行词 从句用that 这是规则。