Dưới đây là các câu đã được điền từ còn thiếu:

5. I last saw her three years ago. I have **not seen her for three years**.
6. It's necessary for us to get on well with our new neighbors. We **must get on well with our new neighbors**.
7. If she doesn't accept your card and roses, things will not be very much helpful. Unless **she accepts your card and roses, things will not be very much helpful**.
8. "Will you be able to make your own decision on this task, Lan?" Phong asked. Phong **asked Lan if she would be able to make her own decision on this task**.
9. My parents spent three hours per day working out. **My parents used to spend three hours per day working out**.
10. No season of the year is as hot as Summer. Summer **is the hottest season of the year**.