—How much did this CD _______ you, Sally? —I got it for 5 dollars.  

— We must______ using plastic bags in order to protect our earth..— Yes, we mustn’t _________any more.

I used to quarrel a lot with my parents，but now we        well.

Though I like the house very much, its price __________ my ability to pay.

 ___________ have you ___________ the meat?