Đáp án+ Giai thich
2.The bus isn't leaving ai 8:00. It's leaving at 8:30
3.A teacher is't giving a tour. A guide is giving a tour
4.They aren't having chocolate for lunch. They are having sandwiches for luch
5. The guide aren't tasting the chocolate. the children are tasting the chocolate
Xin hay nhat + cam on+vote 5 sao
Chuc bn hc tot!