It’s reported that at least 500 million people are using WeChat(微信) in China.
Next weekend we will play ____ Class 2.
– Is the math problem ______? -- Yes, I can work it out ______.
Alice didn’t go to the park ___ her illness.
The blue coat is the cheapest and the red coat is the second _________
-- ____ is the population of your city? -- About seven ____.