【单选题】When he was set free after twenty years in prison he was amazed ______ the changes he found.
【单选题】《我爱你,塞北的雪》(王德词)歌词“我爱你,塞北的雪 ......”,根据歌词,通常应采用( )的演唱形式。
【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. [ ]