I. 单项选择（20分）
1. I got up late this morning and I _______ the early bus.
A. lost B. miss C. missing D. missed
【解析】选D。由前半句“got up”可知为一般过去时。
2. —Oh, Mary! What happened to you?
—Well, I ______ on the stone and hurt my knee.
A. stood B. walked C. hit D. tripped
【解析】选D。句意：——噢，玛丽！你怎么啦？——我被石头绊倒了，伤到了膝盖。D项符合句意。
