Read these sentences and choose 'must' or 'mustn’t'. 1. you do your homework. 2. you bite nails. 3. we respect our teachers.

1). If Helen had worked hard, she would have passed her exams. - III тип Ели бы Элен работа усерднее она бы сдала экзамены 
2). If it rains tomorrow, we won`t go swimming.- I тип Если завтра будет дождь, мы не пойдем плавать
3). If Mary doesn`t send any invitations, nobody will come to the party. - I тип Если Мэри не пошлет приглашения, никто не придет на вечеринку.
4). If I knew his address, I would write to him. - II тип Если бы я знал его адрес, я бы написал ему
5). If I found some money, I would take it to the police station.- II тип Если бы я нашел деньги, я бы отнес их в полицию.

Personally, I'm ready to go anywhere most of the time and love all modes of transport as long as they help me to get further on my way, because I just love travelling! I've heard of people who don't like to travel and I wonder why they don't feel all the excitement found in airports and railway stations, the anticipation of something new. Sure, there are some drawbacks to public transport but the good news is that services are getting better although more expensive. I guess it would be nice to pilot your own airplane, but that would be even more expensive never mind all the learning, wouldn't it? So if could choose any destination and transport mode available, at the moment I would be flying to Sydney to greet the spring sunshine. Airplane seats are quite comfortable and the food is nice and plentiful, there are films to watch and games to play, a lot of time to think and dream. I'm sure there wouldn't be any difficulty to get around the city because of the developed transport system in Sydney. I would spend some time appreciating all the great things around and then I would definitely go around the country possibly on a train but hitchhiking could be a great adventure too!