The key to exercise solutions in chapter Workbook 12 - This is life for the textbook Performer B1, Vol. 1 with authors Marina Spiazzi, Marina Tavella e Margaret Layton from Zanichelli
Question
Look at the signs and write a sentence for each using You must ... or You mustn't ... .
Answer
You must stop here.
You must take a number here.
You mustn't smoke in this area.
You mustn't skateboard, rollerskate or rollerblade in this area.