他怀疑地看着她。

He looked at her ___suspiciously.

他怀疑地嗅了嗅汤。

He sniffed the soup ___suspiciously.

那位正在上楼的老人停下来，非常怀疑地看着我们。

The old man, who was going upstairs, stopped and looked at us very ___suspiciously.