I have to write a formal essay about environmental issues. I want to write a sentence: "I can no longer hold the silence about this problem". Is it possible to say this? Or its better to say something like maintain/remain/keep my silence? Which one sounds more formal?
Hello, Liza02, and welcome to the Grammar Exchange!
Two of the verbs you have proposed (remain, keep) are generally used with the adjective silent. I can only think of the noun "silence" being used with an adjective, as in: maintain a stony silence.
Therefore, I suggest you use remain/keep silent.