下面表格中的①②③④应该填充的内容分别是( )卖方市场与买方市场的比较
A.供过于求、供不应求、价格较高、价格较低B.供不应求、供过于求、价格较高、价格较低C.供过于求、供不应求、价格较低、价格较高D.供不应求、供过于求、价格较低、价格较高
There were some chairs left over________everyone had sat down.
She had just finished her homework________her mother asked her to practise playing the piano yesterday.
Tom was about to close the window his attention was caught by a bird.
—Could I use your computer for a few moments,please? —________.I’m not using it myself.
—Could I ask you a rather personal question? —Sure,________.