`text{Tất cả các câu đều chia ở thì quá khứ tiếp diễn:}`
S + was / were + Ving
S + wasn't / weren't + Ving
1. Saw / was cycling
2. Were preparing / started
3. Were leaving / arrived
4. Were walking / heard
5. Didn't eat / were staying
6. Was drinking / wasn't looking - Hành động diễn ra song song
7. Dropped / was putting
8. Met / was waiting
