从她脸上的表情，我猜测她可能遇到了什么麻烦。

From the look on her face, I ___surmised she might be in some trouble.

看到桌上散落的文件，她猜测昨晚有人来过办公室。

Seeing the scattered documents on the desk, she ___surmised that someone had been in the office last night.