in surprise还是in surprised

是in surprise。

in surprise是介词 名词结构，意为“吃惊的”

Sue screamed, not loudly, more in surprise than terror.

苏尖叫起来，声音不大，与其说是害怕不如说是吃惊。

In surprise, the mother found her little boy sitting at the piano.

母亲惊奇地发现她的小男孩正坐在钢琴旁。

she returned, in surprise.

她吃惊地回来了。

We all looked in surprise.

我们都惊讶地看着。

She asked in surprise.

她惊讶地问。

All the people looked at him in surprise.

所有的人都惊讶地看着他。

The little bird asked the spider in surprise.