It a mountain on snowy days.
在雪天里登山是很危险的.(be)
如果你想了解更多有关宇宙的知识,请浏览《时间简史》这本书.
If you want to know more about space, please the book《A Brief History of Time》
雄安新区将会帮助解决北京的很多大问题,例如交通堵塞.
Xiong'an New Area will help to work out big problems in Beijing, traffic jams.
国庆节,成千上万的人们去天安门广场看升国旗.
On National Day, thousands of people go to Tian'anmen Square and watch the go up.
The government of Dazhou has built the FengHuang Mountain Tunnel so far.(改为被动语态)
The FengHuang Mountain Tunnel has by the government of Dazhou so far.
My father often rode his bike to work last year. (改为同义句)
My father ride his bike to work last year.