peoplearetalkingandlaughinglikeoldfriends改为一般疑问句做肯定及否定回答therearethousandofpeopleinthetowncentre划线部分提问划线部分为thousandsofpollyandAnniearewaitingforataxi

　　people are talking and laughing like old friends改为一般疑问句做肯定及否定回答

　　there are thousand of people in the town centre划线部分提问划线部分为thousands of

　　polly and Annie are waiting for a taxi划线部分提问 划线部分为a taxi