China ______ a lot of people moving to urban areas in the last 20 years. However, many migrants left their families behind.
________ I know, the new airport runway has been under construction for nearly two years.
The cars in the auto show vary ______ price from $ 100,000 ______ $ 2 million, but they have attracted many customers.
I was told that although these old buildings _______ the Qing Dynasty, they remained in good condition.
It was Alice and her friends who helped the homeless old woman,______?
He felt _______ to remind the public to protect the environment.