Exercise 2: Complete the sentences with Since/ For or Ago cô cho bài gì dễ vậy. 1.I haven’t slept well _______________ last Monday. 2.They met each other few days _______________. 3.I’ve had a headache _______________ this morning. 4.The machine broke down an hour _______________. 5.It has been raining _______________  yesterday afternoon. 6.They have been cleaning their house _______________ several hours. 7.We haven’t played basketball _______________ I was a junior high school student. 8.The children have never been in the supermarket _______________ less than two hours. 9.Have you worked here _______________ almost a year? 10.I have been trying to get through on the phone _______________ the past hour