When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.
The country life he was used to ________ greatly since 1992.
I’d like to express my congratulations to you _________ winning the competition.
After the quake, the whole city lay in ____ ruins. However, with all the efforts, ________ new Tangshan was born.
The speaker _________ his voice to make herself heard.
As is known to all, earthquakes are ___________ disasters _________ can destroy buildings and kill people.