It is wise to take precautions against accident

It is wise to take precautions against accident it is wise to take a map with you.if you get-----------(lose I think it is wise of him not to take his advice.it后面加is吗? is it wise to study abroad I think it wise of him not to take his advice.it后面为什么没有is啊? it is wise ( )you to take a map and a mobile phone 括号里应该填什of Is it wise to make friends on line? It is wise ___you not to have accept the gift. Still it is highly recommended that some precautions should to believe other wise is to take on a point of view that is 翻译“”It is wise to know your limits,yet it is admirable to ve I think it wise of him not to take his advice.