We teenagers should the old and offer our seats to them on buses．（ ）
A．laugh atB．depend onC．care for
Every morning， Tim often sees some groups of middle﹣aged women ____________in the square．（ ）
A．danceB．to danceC．dancesD．danced
Could you please tell me____________？ （ ）
A．where are you from
B．how can I get there
C．what's the matter with you
D．where does he live
If the temperature is below 0oC， water will turn into __________ in the open air．（ ）
A．iceB．steamC．fogD．rain
﹣﹣______ fine weather it is! Let's go for a walk．
﹣﹣Sounds like a great idea．（ ）
A．WhatB．HowC．What aD．How a
In summer， food will go bad quickly ________ we put it into a fridge．（ ）
A．ifB．unlessC．as soon asD．while