Bài giảng Tiếng Anh Lớp 9 - Unit 2: Grammar builder and reference

 UNIT 2: GRAMMAR BUILDER AND REFERENCE had a shower after she had played football.
 died because we had forgotten to water them
 went out after we had done our homework.
 bought a new mobile phone because I had lost my old one
 stopped because they hadn’t bought any petrol
locked the door after I had left the house.