Bài 2 :hãy biểu diễn các lực sau đây :
- lực kéo tác dụng lên vật B theo phương nằm ngang , chiều tứ trái sang phải , độ lớn 15N 
- trọng lực tác dụng lên vật A có khối lượng 5kg

8. sweden ; 2. eat  ; 20. Don't

A

22/5 + 1/2x^2 = 4 . 8/5

III.Choose the best answer to fill in the blank

25.   Doing morning exercise keeps us ________ every day.

        A. tired   B. fat       C. fit       D. bored

        26.   They have joined many activities like sailing, cycling, fishing and football . They are very ________.

        A. sporty B. strange       C. crazy  D. helpless

VI. Choose the right answer.

1. (Were/ Was) the weather nice yesterday?

2. Did you (get up/ got up) late this morning?

3. (Were/ Was) you born in 1997?

4. Did you (have/ had) a pizza for lunch yesterday?

5. Did you (go/ went) to Nha Trang last summer?

6. Ba is a good friend of (me/mine)

7. Was Lan at the movie theater last night? - Yes, she (was/ did) .

8. (Were/ Did) the Browns return to Ha Noi by train?

9. We went to Hue (by/ on) plane.

10. Hoa learned how (using/ to use) a sewing machine.

VII. Fill in the sentences with the correct form (past simple) of the verbs in brackets.

1. I ____________ (see) the film last night but I ____________ (not like) it.

2. ____________ (Marco/ win) the golf competition?

3. They ____________ (not play) very well yesterday. They ____________ (lose) the match.

4. How many goals _________________ (your team/ score) in the first half?

5. I ____________ (be) very tired, so I ____________ (go) to bed early last night.

6. ____________ (you/ go) swimming this morning?

7. The children ____________, (not be) hungry, so they ____________ (not eat) anything.

8. Susan and her friends ____________ (come) to Japan three months ago.

9. I ____________ (have) a wonderful holiday with my family last July.

10. Jane ________ (not be) at the party last Sunday, so she ________ (not know)what happened.

11. You should________ (do) your homework, instead of _________ (watch) TV before dinner.

12. She turned on the radio because she wanted ____________ (listen) to some music.

13. ____________ (you/ watch) the news on TV last night?

14. What ____________ (you/ do) tonight, Hung?

15. Which programme ____________ (Linda/ like) best?

16. A new series of wildlife programmes ____________ (be) on at 9 o’clock Monday evenings.

17. My father never ____________ (watch) romantic films on television.

18. I only let my kids ____________ (watch) television at the weekends.