we should make it a rule to throw rubbish into dustbins inst

we should make it a rule to throw rubbish into dustbins inst we should make ___a rule to throw rubbish into dustbins inst To make the river clean,rubbish must _____(not throw)into it We should not throw the rubbish ( ) to protect environment We can't throw rubbish everywhere,we should c____ it and the Shall we make it a rule that no language ( ) English should 关于 make it a rule to . We aren't allowed to throw rubbish 23 .You should make it a rule to leave things＿＿you can find You should make it a rule to leave things＿＿you can find them 32.You should make it a rule to leave things ________you can you should make it a rule to leave things __ you can find th