小题1:What bad weather!/ How bad the weather is!/ What a terrible sandstorm!
小题2:What has caused/made it (the bad weather/ the sandstorms)
小题3:how do trees influence/ affect the weather
小题1:What bad weather!/ How bad the weather is!/ What a terrible sandstorm!
小题2:What has caused/made it (the bad weather/ the sandstorms)
小题3:how do trees influence/ affect the weather