【单选题】When he was set free after twenty years in prison he was amazed ______ the changes he found.
【单选题】He ________ very busy this week, he ________ free next week.
【多选题】居留国在规定外国人的法律地位时,必须顾及( )。
【单选题】If he ______, Jack will go to fly a kite next Sunday. [ ]