we should prevent pollution to live happily中的不定式是什么成分

we should prevent pollution to live happily中的不定式是什么成分 We should prevent pollution ___ happily. we should prevent pollution _____happily.A.to live B.to livi we should prevent pollution______ happily.A to live B for li we should try our best to prevent the air pollution _____(li 英语翻译we should make every effort to prevent pollution _____ t We should try to stop the air pollution _____(live) a better What should we do to prevent AIDS What should we do to prevent AIDS? try ones best to do中的不定式是什么成分 what measures should we take to prevent sandstorm coming? we should do our best to prevent our earth___.