11．She found that he was a very good pupil． She ______ ______ a very good pupil
12．His friend didn't know what he should do． His friend didn't know ______ ______ do． 13．Miss Zhao came in．There was a smile on her face Miss Zhao came in _____ a smile ______ her face． 14．He never returned them． He never ______ them ______． 15．What was wrong with the old man? What ______ ______ the old man? 16．If we don't move that bag,there may be an accident． ____ move that bag,____ there may be an accident．