Construisez des phrases correctes à partir des segments proposés.
1. If the Chinese managed to build a railway line between Beijing and Washington, it would be a real technological feat.
2. The problem is that it would be very expensive.
3. Would you be ready to take that train?
4. If it was cheaper than the plane, I would. Otherwise, I would choose the fastest means of transport.
5. If they had voted for that project earlier, it would have reduced the unemployment rate.