Do you know the workers built _______180-metre-long bridge over the river— Really That’s amazing.

People try to avoid public transportation delays by using their own cars,and this creates further problems.[ ]

Nowadays，skiing，being a sport, has become a big industry and a notable feature of leisure culture

Niagara Falls is a great touristdrawing millions of visitors from all parts of the world every year．

None of them knew what had happened _________ I toldthem about it.