他的妻子在发现车里有血后变得可疑。

His wife became ___suspicious after finding blood in their car.

银行火灾被视作可疑事件处理。

The fire at the bank is being treated as ___suspicious.

有点可疑的是，没人知道谋杀发生时他在哪里。

It's a bit ___suspicious that no one knows where he was at the time of the murder.