I can't ____(walk) because my feet hurt.
问题描述:
I can't ____(walk) because my feet hurt.
答
I can't _walk___(walk) because my feet hurt. (应该是用原形吧)
答
填 walk 原形.
只要是跟在助动词 can / may / do 这些后面,不管语气是肯定还是否定,一律都是原形.