题目内容：

用所给词或词组填空如题
concentrate on,succeed in,stay up,at present,in the way,care about.point,in a mess,instead of,obey When problems are ____,it is usually difficult for a person to ____ what he or she is doing.What we usually do is to _____ all night trying to get everying right.In fact,sleep is very important at the time,If you don't get enough sleep,your mind will be ____.That means you can't think properly.So,my ____ is that we should _____ the rule of nature.____making yourself exhausted.it is probably wiser for you to make a list of all the difficulties you have _____ and try to work out the most important problem,Don't ____ what others say.Just focus on one problem at a time and you'll finally_____ solving all of them