----- Nội dung ảnh ----- **UNIT 4** Complete the sentences using the correct past simple or past continuous forms of the verbs in brackets: 1. We (decide) __________ to form a volunteer club while we (prepare) __________ our group presentation about people in need. 2. When we (arrive) __________ at the gate of the primary school at 5:30 p.m., lots of children (wait) __________ in the playground. 3. I (decide) __________ to talk with some of the children while we (chat) __________ with Amy, her mum (ring) __________. 4. While I (have) __________ a discussion about how to help the children, we (agree) __________.
