Dùng thì quá khứ đơn hoặc quá khứ tiếp diễn
1.She ...(be) so tired that she ...(sleep) for twelve hours
2.The tortoise ...(run) while the hare ...(have) a nap
3.i ...(phone) you four times last night but you ...(sleep)
4.The police ...(ask) them lots of question before they ...(release) them
5.while the children ...(surf) the internet,they ...(find) a really interesting website about music
6. He ...(walk) down the road when he ...(hear) a loud noise
7. When we ..(be) in Canada ,we ...(go) skiing almost every day
8.Where ...you...(go) last summer holiday,Jim?~Well,I ...(take) e trip to Minneapolis
9.When I...(arrive),they ...(say) hello but continued working
10.When you ...(meet) me yesterday,I ...(not go)to school, I ...(go) to the doctor's - I felt terrible