When did people f____ begin to use stamps?

Most people are f___ of snakes当我到达那里时,他还在那里When we______there,he was______there When did people begin to trave along the Silk Road? When did people f____ begin to use stamps? when did people begin to travel along the silk road when did the people in Egypt built pyramids the supermarket is f___ of people Chinese people are most f___ in the world I'll never f___ people who helped me before. Most people take up a bobby for f___,friendship 把下列句子改写成被动语态:when did the people build the bridge? When did Chinese people start to celebrate Chinese New Year? How?Why? when did i last give a talk to so many people这句话中的last 是什么意思 when did the people in Egypt built pyramids用英语回答! When does your mother usually come back f___ work? when I am f___,I like watering the flowers When using a map,pay attention to the f___ things. when I 'm f___,I will go to see you. when did people begin to travel along the silk roadWhen did people begin to travel along the Silk Road?用英文回答