Kitty __________(not know) the answer to the question.
问题描述：
Kitty __________(not know) the answer to the question.
答
does not know
答
didn't know. KITTY 没有回答那个问题..说明这件事已经过去.所以要用过去时.
答
doesn't know
第三人称单数
答
didn't know
答
didn't know
未说明一般为过去式
答
您好！
Kitty _____doesn't know _____(not know) the answer to the question.