This is ____ book I bought yesterday. Isn't it _____useful one?
He made a fire _______ himself _______ warm.
—Would you like to attend China’s Got Talent(中国达人秀)? —________.But I’m busy preparing for my test.
Did you have fun ________with your teachers on the Internet?
It’s raining hard outside. You’d better __________ at home.
He didn’t have a day _________last week.