For this assignment, make sure that all your questions include the context, in other words students will be able to understand the question without knowing where the question came from or what the subject is about.
As an example, the question "How expensive will it be?" does not give the context and another student would not know how to answer it. A better question might be "How much does an ergonomic chair cost?".
For marking, each question will be marked out of 1 only, and you will either receive 1 or 0 for it. It must be PERFECT to receive the mark -- proper grammar and punctuation, no spelling mistakes, and it must include the context. I would recommend you get a peer to check your questions before submitting.