Chia đúng thì của động từ trong ngoặc 

1,Most people (not like) don't like to visit a doctor

2,In his job he usually (stand) stands

3,My brother never (go) goes out in the evening

4,He usually (work) works with paints and brushes

5,Do you know anyone who (speak) speak Italian ?

6,At work he usually (sit) sits all day

Supply the correct form of the adj or advs in brackets

6. Loan studies Math ( well) .........better................than you

7. he has ( mamy ) .......more.......... books than me.

8. She is the ( beautiful ) .....most beautiful......... in her class

9. His house is ( far ) ......farther......... than mine

10. Nam is the ( far ).....farthest..... in his group

11. Who is ( tall ) ........taller............ Mai or Lan ?

12. I study Math ( well ) ......better....... than you 

13. He is the ( handsome ).......most handsome....... in his class

14. She studies English the ( badly ) ........worst............... in her group

15. I have ( little ) ..........less............ money than him 

 Rewrite the sentences with the beginning words

2. Lan is taller than Mai 

 = > Mai is shorter than Lan

3. I live more pens than her 

= > She lives less pen than me

4. Would you like to play chess ?

= > Let 's play chess

5. Should wew go swimming ?

= > What about going swim ?

6. Mai has less money than Hoa 

= > Hoa has more money than Mai

7. What does Mr. Ha do ?

=> What job does Mr.Ha do ?

8. Ba is father than Nam.

=> Nam is nearer than Ba

9. How much are these English books ? 

=> How much do these English books cost ?

10. Lan wants to learn English 

=> Lan enjoys learning English

11. Wherw does he live ?

=> What 's his address ?

12. When is her birthday ? 

= > What' s her date of birth ?

13. She ' ll visit her gerandmother tomorrow ?

=> She 's going to visit her grandmother tomorrow

S hình vuông là:25x25=625(cm²)

Đ/S:625 cm²

Diện tích hình vuông đó là:

    25 x 25 = 625 cm2

Đáp số 625cm2

1) What does Hoa learn in science class?

Hoa learns chemistry and biology in science class.

2. What does he good at ?

He is good at fixing electric appliances.

3. Where do all the students when the bell rings ?

When the bell rings, all the students go into the yard.

4. Where does she want to go to now ?

She wants to go to the English club now.

Ta có :

n+5 chia hết cho n-2

=> n-2+2+5 chia hết cho n-2

=> ( n-2 ) +7 chia hết cho n-2

=> 7 chia hết cho n-2

=> n-2 ϵ Ư₍₇₎ = { 1,7,-1,-7}

=> n ϵ { 3,9,1,-5 }

không phải là số tự nhiên vì đây là dãy phân số!

ta có A=2n-4+6/2n-4=1+6/2n+4=>để A nguyên thì 6/2n+4  phải nguyên=>2n+4 thuộc Ư(6)={+1;+2;+3;+6}

ta có bảng g/trị

2n+4       -6             -3             -2                -1                      1                   2                 3               6

2n            -10           -7             -6                -5                     -3                   -2               -1              2

n            -5(TM)      -3,5(L)   -3(TM)        -2,5(L)         -1,5(L)          -1(TM)            -0,5(L)         1(TM)

tích đúng cho mk nha bài này hơi dài đó

mk hông hiểu bài 1 lắm