.I ___ the English conversation yesterday evening.
There is no doubt ______ man will conquer nature some day.
______ different life today is from ____ it was 20 years ago.
Paper-making began in China and from here it ________ to North Africa and Europe.
In 1860s, the Italian archaeologist Giuseppe Fiorelli was made director of the Pompeii dig.
You just can’t imagine what a bad impression some Chinese left _____foreigners while travelling abroad, so it is necessary to impress _____ people the importance of good manners.A. on, to B. on, on C. to, on. D, to , to