1. My father (work) __________ for this company since he (graduate)_______________ from his university in 1999.

2. I (have)_______________ dinner when my mother (come)________________ home.

3. In recent years, there (be)____________________ many changes in this town’s facilities.

4. 30 years ago, he (go) _________________ to France. Since then, he (work)_____________________ at a French company.

5. While my father (watch)________________ TV, my mother (wash) ________________ the dishes.

6. I (do) ____________________ my homework, so my teacher is very pleased.

7. This time last year, I (travel) _______________ in some Asian countries.

8. She (drive) __________________ when a deer jumped in front of her car.

9. Since he (read) _______________ the book, he (become) ___________ a fan of the author.

10. He (love)_________________ reading books since he (be) ______________ a child.

11. She (eat) _______________ sushi twice in her life.

12. Over the last few years, scientists (do) __________ many studies to show the impacts of global warming.

13. I (clean)________________ my car, it’s very clean and shiny now, you see.

14. At 8 p.m yesterday, she (watch) ___________________ television.

15. Last week, I (see) _______________ a movie with my cousin.

Cho hình thang cân ABCD. Đáy nhỏ AB = 12cm. Cạnh bên AD = 10,4cm. Đường cao AH = 9,6cm. Vậy diện tích tam giác ADC là .........cm ²