Question

d. phones/must/used/not/mobile/be/driving/while

• A. While driving mobile phones must not be used.
• B. Mobile phones must be not used while driving.
• C. Mobile phones must not be used while driving.
• D. While driving mobile phones must be not used.

Answer 1

The correct option is C Mobile phones must not be used while driving.

Option A is incorrect because the sentence starts with a conditional conjunction is used. Options B and C are the same. Option D is incorrect because the imperative be verb is followed by the negating word when it should be preceded by the negating word. Therefore, Option C, that is, "Mobile phones must not be used while driving," is correct.