她申辩自己的清白，但没人相信她。

She pleaded her ___innocence, but no one believed her.

她努力证明她儿子的清白。

She fought to prove her son's ___innocence.

他们在监狱服刑七年后被释放，并决心证明自己的清白，找到真正的凶手。

They were released after seven years in jail and were determined to prove their ___innocence and find the real murderer.