
Jack and Pingping are in the same c.

I will w to school with my friend Zhang Hua.
There is a very nice library in our school. It is big and bright. It has all kinds of books and newspapers. We can borrow storybooks, English books and many other books there. We can also do some reading there. Jenny often does some reading by the window in the first reading room. Li Ming usually borrows some Science books from the library.
I'm going to borrow an English storybook. Our English teacher often tells us that it is good to do some reading. And I will try my best to do it
Mr White lives in a tall building. He lives on the sixteenth floor. Every day, he takes a lift (电梯) up and down.
One Saturday afternoon, he went shopping with his little son and bought many things. They drove back and carried all the things up to the lift. Suddenly they saw a piece of paper on the wall. It said, "Dear sirs and madams, there's something wrong with the lift. Please use the stairs now." The son took a bag and ran upstairs quickly. But Mr White walked slowly.
At last they stood in front of their door feeling very tired. Mr White began to look for the keys, but he could not find them. Suddenly he shouted in a loud voice. "Oh, no! I've left my keys in the car."
— Because ______________.
B .