—Darlin, shall we change our mattress(床垫) for a better one, the price of which is a twice more, OK?—All right. I get a headache when it comes to figures.
___ is believed ___ more and more people would fly to the moon in the future.
This ____ of trousers ____ fit me. Please show me ____.
She likes to use words ___ is clear to us.
He got home from work only to find the door ___ and something ____.
In our class everybody regards ___ difficulties as his own.