问：1.stayed ,for,he,there,week,a .
答：1.He stayed there for a week.
译：他在那里停留达一个星期之久.
问：2.prefer,do,which,you?
答：2.Which do you prefer?
译：不知道
问：3.3do,for,water,what,we,use?
答：What do we use water for?
译：我们用水干什么?
问：4.because,he,it,likes,interesting,job,is,his.
答：4.He likes his job because it is interesting.
译：他喜欢他的职业,因为它很有趣
问：5.must,we,run,not,downstairs,school,at
答：We must not run downstairs at school.
译：我们在学校不能跑步下楼