:match the sentences with the signs and complete the sentences.use have to,don,t have to or mustn't 1)you mustn't ride a bike on this road. 2)when people work here, goggles to protect their eyes. 3)we can go faster now. at forty kilometres an hour. 4) careful. too fast because there might be camels on the road.
2)don't have to
3)have to,mustn't