13. In order to _____ the development of the west of our country, many special policies have been made, such as encouraging people to go to work in the west.
This is a(n) __________ arrangement, not a permanent one.
When the boy playing by the river fell into the river, I was out of the room _______.
His grandpa was so poor at that time that he had to get up atdawn every day and walk to the factory indistance.
It wasn’t until dark _________ he found _________ he thought was the correct way to solve the problem.
It was Feb 8 2014 (Beijing) ___the opening ceremonies of the 2014 Winter Olympics ___ in Russia.