高等继续教育 / 高级英语II
正确率:100%
题型描述: 单选题
We have a long way to go ________ we can invent truly intelligent machines.
A.that
B.before
C.when
D.if
We have a long way to go ________ we can invent truly intelligent machines.
A.that
B.before
C.when
D.if
参考答案:
佳题速递: