―Will you go to the Great Wall with us―If John wants to go, _______

Is this key ________–No, it isn’t. It’s ___________.

下列各组文言语句的句式特点不相同的一项是（ ）

Mrs. White showed her student some old maps _________from the library.

North Korea threatens to ________ from six-party talksaimed at ending North Korea’s nuclear program unless its proper rights are tobe satisfied．