Open round
No multiple choice and no names. People scan the code, type an answer on their phone, and when you close the round every answer appears on the big screen at once — anonymously. Good for icebreakers, brainstorms, "one word for how you're feeling", that sort of thing.
The clock runs long so people can think — five minutes by default. You can end a round early from the host screen whenever the answers stop coming in.
Questions
Each question just needs its wording — there are no answers to fill in, because the room supplies those.