高中英语语法填空 急 请把答案分开写好

高中英语语法填空 急 请把答案分开写好
Being alone in outer space can be frightening .That is one reson why satronauts on space flight were given plenty of work to keep ____busy.They were also in constant
communication with people on the earth.However,being with people _____you cannot
get away form might be even harder than being alone.
Scientists have studied the reactions of men_____one another during long voyages.They have found that the longer the voyage______(last),the more serious
the problem of adjustment is.When men are shut up together for a long period,they begin to feel uneasy.
______(apparent),although no one wants to be alone all the time,everyone needs some degree of privacy.When people are enclosed together,they are in_____is called a stress situation.That means that they are under an_____(usual)amount of pressure or stress.people who are well-adjusted are able to handle stress situations better than others.That is one reson why so much care_____(take)in chossing our satronauts.These men undergo____long period of testing and training.One of the things_____(test) is their behaviour under stress.