--- How many of you have solved the math problem?--- ________, the math problem is far too difficult for us to work out. .
Let’s go to the ______ to study for the exam.
— What a nice MP5! Whose is it? — It’s ________. My father bought me last week.
I am reading _______ story. It is ________ interesting story.
--- A homeless man won a lottery ticket. He became rich over night. --- ___________________
You can save money _______ you buy cheaper things.