Fill in the Blanks Road signsOnline version Complete the sentence with the appropriate modal auxiliary (MUST -> obligation ; MUSTN'T -> interdiction). by Christelle MUSSET 1 You stop when the lights are red . You drive fast when it's raining . You always wear your seatbelt . You use your mobile phone when you are driving . You look at the signs . You park in the middle of the road . You use your indicator when you want to turn .