to throw away less rubbish is ——（protect） the environment

to throw away less rubbish is ——（protect） the environment We should not throw the rubbish ( ) to protect environment throw rubbish throw away rubbish 哪个对 to protect environment还是the environment 为什么? How to protect the environment It is our duty to protect the environment it is our duty to protect the environment. to protect the environment is our duty 同义句 To protect the environment is important.(改为同义句) To protect the environment is important.(改为用It开头的句子） ten trucks is enough to carry away the rubbish here throw rubbish on the