You are late again. What’s your e____ （ 理由） for being late this time ？
Did you know who d____ (发现) America?
It may be s­­­____  (晴朗的) tomorrow.
Most people can greatly improve the q____ (质量) of life.
Many tall buildings have a____  (已经) been built in our city.

一 How much are these oranges?

一