----- Nội dung ảnh ----- (sleep) ____________________________ 5. The light (go) __________________ out while we (have) dinner. 6. While we (cross) __________________ the street, we (meet) __________ our teacher. 7. Tom (see) __________________ an accident while he (stand) __________ at the bus stop. 8. The children (play) __________________ football when their mother (come) __________ back home. 9. The bell (ring) __________________ while Tom (take) __________ a bath. 10. We (clean) __________________ the house when she (come) __________ yesterday.