用反义词填空 Qinhu is a protected wetlands in jiangsu.it is ___ to kill birds there.if you go to watch birds ,you'd better not

用反义词填空 Qinhu is a protected wetlands in jiangsu.it is ___ to kill birds there.if you go to watch birds ,you'd better not wear ____ leather shoes because you will walk a long way.make sure you don't litter there or you will be _____ and remember to try your best to protect them,or it will be ____ to see them in the future.