→ The window.
3.9.
1. thời gian + ago
2. in + thời gian
3.
4. last + Ved/2
5. started / began + to V/V-ing
6. When did + S + V base?
Present Perfect Tense - Past Simple Tense
when + S + Ved/2
7. The last time + S + Ved/2+was+in+thời gian
when + S + Ved/2
- thời gian + ago
8. It is + th ...
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