Một chị gà mái                                      Xăm xăm xúi xúi

                        Áo trắng như bông                                Tìm ổ quanh nhà

                        Yếm đỏ hoa vông                                  Chạy vào chạy ra

                        Cánh phồng bắp chuối                           Tót ! Tót ! Tót !Tót ! 

tìm x biết :

a,(2x+ 4/5) (3x-1/2)= 0

b,(x-2/5) (x+4/7)= 0

c,-1 =|x- 5/6|= 1/2

d,x+ 5/8 x- 12/16x= 1

7³.7⁵=7³⁺⁵=7⁸

1. He (work)..........is working...............in the office now.

2. My friend(enjoy)...enjoys....................hamburgers very much.

3. The students(look) .........are looking..................up these new words right now.

4. We always (do)...do............English exercises carefully.

5. The sun (rise)...........rises.............in the east.

6. They (talk)........are talking...................to John at the moment.

7. he children(sleep).......sleep.....................well for two hours every afternoon.

8. My sister(need).....needs......................some money for books.

9. It(rain)...........rains................very much in the United States.

10. Linda(write)........................to David at this time.

11.Thu (not have)..doesn't have.........................any apples. She (have).....has...............some oranges.

12. Minh (watch)....watches...............TV every night.He (watch)........................TV at present.

13. We often(swim)....swim.................in the river, but today we (go)...go..................fishing.

14. They usually(play)...play...............tennis. They(play).are playing.......tennis at the moment.

15. Nam(ride).....ride.............his bike to school everyday, but today he(walk)..is walking..........to school.

16. Almost everyone(work)...works...............very hard.

17. This book(belong).........belongs...............to me.

19. Mr Brown(teach) ....teaches...............us English.

20. Please quiet! The baby(sleep)....is sleeping.........................

21. Listen ! Someone(knock).........are knocking..........................at the door.

22. Look ! The train (come)......is coming.......................

23. My father (have)......has........................breakfast at present..

25. You shouldn't (smoke)..smoke....................cigarrettes.

26. We should (collect).....collect..................spare cans and waste paper.

27. People should(eat)....eat..............alot of fruit and vegetables. 

29. What(your parents/ do).do your parents do...in their free time?

30. Thuy (travel).....will travel......................to Hanoi next month.