看起来稍后可能要下雪。

It looks ___as ___if it might snow later.

他跟我说话的样子，就好像他已经知道我所有的问题了。

He talked to me ___as ___if he already knew all about my problems.

她表现得就像什么奇怪的事都没发生过一样。

She acted ___as ___if nothing strange had happened.