— About 15 minutes by bike.

①深蓝的天空中挂着一轮金黄的圆月。（缩句）

②这少年便是闰土。（扩句（至少二处））

-You look so worried, what’s wrong? 

-More and more people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.

-–Why not get your husband a new energy car for his birthday?

—_______ That's too expensive.