1. Yet little has been done to solve this problem worldwide. 2. To make one final point, … 3. As we are all aware … 4. … has long been an issue debated mainly in … arou...
48.AsfarasI'mconcerned,ridingbicyclesisagoodsolutiontoairpollution. 就我个人而言,骑自行车是一个解决空气污染的好办法。 asfaras…beconcerned就……而言;关于 asolutionto……的解决办法 49.Litteringmakesourschooldirty,anddoesharmtotheimageofourschool.乱...
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