With more forests being destroyed, huge quantities of good earth ___________ each year.

查看本题答案

包含此试题的试卷

is washing away is being washed away was washing away are being washed away

is washing away is being washed away are washing away are being washed away

is washing away is being washed away are washing away are being washed away

is washing away is being washed away are washing away are being washed away

had been washed away has been washed away were washed away are being washed away

is washing away are being washed away are washing away is being washed away 

is washing away is being washed away are washing away are being washed away

is washing away is being washed away are washing away are being washed away

is being washed away is washing away are washing are being washed away

is washing away is being washed away are washing away are being washed away

is washing away is being washed away are washing away are being washed away

is washing away is being washed are washing away are being washed away

caused causing to cause being caused

is washing away 　 is being washed away are being washed away are washing away

destroying having destroyed to destroy being destroyed

is washing away is being washed away are washing away are being washed