基本信息
Ⅰ. 单项填空
A. 课本要点
1. The scientist spent about two years_________ the movement of the star.
A. noticing B. observing C. glaring D. staring
2. —I haven’t got a pen to write a letter with.
—_________you use a ball-pen?
A. How about B. How C. What if D. What for
