Nick stayed up really late last night. So this morning he by the time the class began.A. had fallen asleep B. had showm up C. had realized
—Hi, I’m Xiao Li. I’m very glad to friends_____ you. —Me, too. I’m Xiao Wang.
—I’m sorry that I broke your pen. Let me buy you a new one. — . I have another one.
—Mr. Hu, can you tell us how to learn swimming well? —Sure. But remember we can learn nothing well _______ hard work.
I think _______ necessary for you _______ breakfast.
As we know, ________is good for our health.