问题
选择题
I've never seen anyone run so fast- ______ David go. [ ]
A. just watch
B. just to watch
C. just watching
D. just having watched
答案
答案:A
I've never seen anyone run so fast- ______ David go. [ ]
A. just watch
B. just to watch
C. just watching
D. just having watched
答案:A