l have been to japan【改为一般疑问句】

问题描述:

l have been to japan【改为一般疑问句】
l became a student a year ago改为现在完成时 The population of chongqing is over30000000 【对over3000000提问】
mei shan is a flight attendant【对a flight attendant提问】

1.Have you been to Japan?
2.I have been a student for one year.
3.What is the population of chongqing
4.What is mei shan?或是What does mei shan do?