1. She (come) came to France 2 years ago. 

2. I (just send) have just sent the letter. 

3. He (work) has worked for that company for 5 years. 

 Quá khứ đơn S = I/ He/ She/ It (số ít) + was

4. I (graduate) graduated from Hue University last year. 

Quá khứ đơn S = I/ He/ She/ It (số ít) + was

5. Tom (play ) plays football every afternoon. 

He/ she, it ->plays

. 6. I (cook) was cooking in the kitchen when he came in.

trong các câu có chủ ngữ ở ngôi 1 I (tôi), ngôi thứ 3 số ít  (He, she, it) và các danh từ số ít  ta dùng Was.

7. Mai (attend) is attending a meeting at the moment. 

Hiện tại tiếp diễn He/ She/ It/ Danh từ số ít/ Danh từ không đếm được + is + Ving.

8. (help)Helping him whenever he needs. (gerunds)

9. Mary (find) founda five-pound note while she (walk) was walkingto school yesterday.

10. I (just finish) have just finished reading War and Peace . It's a brilliant book.

11. I (not be)won't beat work tomorrow, I'm taking the day off.

12. How long have you (be )been a nurse, Mss Lan? For 5 years.

13. While Peter (drive) was driving home late last night he (run) ran out of petrol.

15. She always (get) gets up early to study her lessons.

16. Nylon (invent) was invented in the early 1930s by an American chemist, Julian Hill. Other scientists (work)worked with his invention and finally on 27 October 1938, nylon (introduce) was introduced to the world. It was cheap and strong and immediately (become) became successful, especial in making old ladies' stockings. During the Second World War, it (use)used to make parachutes and tyres. Today, nylon (find) is found in many things: carpets, ropes, seat bells, furniture, computers and event space parts for the human body. It ( play )plays an important part in our lives for over 50 years. Next year, about 2.6 million tons of nylon (manufacture)will be manufactured.