--How about going out for a walk with us?--I wish I --,but I have to finish my homework.A.will B.would C.can D.couldWhy the answer is "D",not"C"?

--How about going out for a walk with us?
--I wish I --,but I have to finish my homework.
A.will B.would C.can D.could
Why the answer is "D",not"C"?

wish后面的宾语从句中谓语动词用虚拟语气,即would/should/could/might +动词原形,而could表示可能性,would不表示可能性.

going out for a walk with me? what about 填What about或者How about都可以！！ why not go out for a walk with us? 为什么不出去