________ on ten years of observation and study, Professor Wang announced that everyone dreams every night,whether they realize it or not.
I couldn’t do my homework with all the noise ___.
Their class is __ a camera, a TV and a computer.
Every time I went to visit Mount Tai, it __ me with its nature beauty.
All the staff in our company are considering ___ to the city center for the fashion show.
Only by shouting at the top of his voice, ___.