Text-to-speech, pronounce "question mark"

Dear all, using Text-to-speech, please help to make Danielle pronounce the 2 full words together "question mark" in the middle of a sentence. She either make a silence for both words, or a silence just for "mark".

The sentence can be: please use a question mark as wildcard.

Here is what I already tried in the text:

• "question mark", (question mark), ("question", "mark"), ("question"), ("mark"), ("question") - ("mark"), nothing works.
• This worked: "please use a question my name is mark", then I edited the audio and removed "my name is", which make the voice tone weird.

Please give me the trick, as I start to spend several hours on this.

Thank you so much.