With the country’s population reaching 1.6 billion in the mid of this century, most of China’s rivers, including the Yellow River, ____.[ ]

The Education Department says that school safety has set off alarm bells with frequent reports of serious accidents______ students got injured or killed.[ ]

The message you intend to convey through words maybe the exact opposite of ___________ others actually understand

As China ________ into a market economy, the government no longer assigned jobs, food or free housing to urban residents.

Where is Bob? I cannot find him anywhere. — He _____have been off long. I heard him make a call just now.[ ]