----- Nội dung ảnh ----- 1. (sleep) 2. The light (go) out while we (have) dinner. 3. While we (cross) the street, we (meet) our teacher. 4. Tom (see) an accident while he (stand) at the bus stop. 5. The children (play) football when their mother (come) back home. 6. The bell (ring) while Tom (take) a bath. 7. We (clean) the house when she (come) yesterday.
