Yan' an, a city in northern Shaanxi province, has seen great progress in its tourism industry over the past few years.
. The government doesn’t know how to deal with the dangerous situation all the public are aware of at present.
. Don't bother Tom, he is with the experiment on water molecules in the lab.
It’s ____ comfort to know that so many people are donating money and food to the people in need.
_________ the project in time, the workers were working at weekends.
. _________ many times, he finally understood it.