My grandparents live inan old apartment with ________ floors and they are on the ________ floor.
我的祖父母住在一间五层的旧公寓里，他们在五楼。
考查数词。five基数词，表示数量5个；fifth序数词，表示顺序第五，根据第一个空后的floors为名词复数形式，可知用基数词five，表示“有5层的公寓”，根据第二个空后的floor为名词单数形式，可知用序数词fifth，表示“第5层”，故选B。
My grandparents live inan old apartment with ________ floors and they are on the ________ floor.
He got ________ birthdaycakes on his ________ birthday.
We are preparingprograms to celebrate our country’s ________ birthday.
—I like number “9” best,because I think it stands for “long lasting”.
—Me too. So I chose ________ floor to live on.
Please pass me_________book on the right.
— What did the teachersay?
—He told us to go over__________lessons.
Jack is going to be anolder brother. His parents are planning to have their________child.
The new bridge is________ metres long.
—What's the key to success, Dad?
—More time and hard work, ________ you'll make it one day.
Alice can sing some English songs, _______ she can’t play the guitar.
