Bài 8:Viết lại câu thành dạng phủ định và nghi vấn. 1. He has been an English teacher for 20 years. (-) ………………………………………………………………………………………… (?) …………………………………………………………………………………………? 2. We are having an English test next Monday. (-) …………………………………………………………………………………………. (?) …………………………………………………………………………………………. ? 3. The people were friendly. (-) …………………………………………………………………………………………… (?) …………………………………………………………………………………………… ? 3. Liz enjoyed her summer vacation last year. (-) ……………………………………………………………………………………………. (?) ……………………………………………………………………………………………? 4. Nam will be absent from school tomorrow. (-) ……………………………………………………………………………………………. (?) …………………………………………………………………………………………… ? 5. She goes to the gym twice a week. (-) ……………………………………………………………………………………………. (?) …………………………………………………………………………………………… ? 6. My brother has ever spent his summer holiday in England. (-) …………………………………………………………………………………………. (?) …………………………………………………………………………………………. ? Bài 10 a. Khoanh tròn vào chữ cái có lỗi sai A, B,C hoặc D trong mỗi câu sau.(1,0đ) 1. What do you do last night ? I watched TV last night. A B C D 2. He didn’t went to school yesterday. A B C D 3. I received a letter to my friend last week. A B C D 4. I went to Ha Noi with my parents year last. A B C D

Bài 5: Viết lại câu 1. often/ I/ the/ museum/ Saturday/ visit/ on 2. 3 years/ my / died/ ago/ neighbor/ because/ accident/ got /an 3. cooking/ sister/ in/ my/ is/ dinner/ kitchen/the 4. do not/ Jane/ usually/ breakfast/ morning/ in the/ have. 5. tired/ I/ when/ cycle/ to/ school/ am/ always/I 6. reused/ recycle/ we/ bottles/ can? 7. Anything/ She/ here/ has been/ never/ she/ but/ buys/ several times/ in. 8. Ever/ you/ been/ Australia/ have/ in? Bài 7: Chia động từ trong ngoặc cho phù hợp 1. I ( meet ) ………….. her at the movie theater last night. 2. My mother ( make ) …………………….…………. a dress now. 3. Two years ago, she ( teach ) …………………………. at a village school. 4. What ……………………… you (do) ………………….. yesterday morning? 5. We (not travel ) ……………………………… to Hue next month. 6. She never ( stay ) ………….. up late at night. 7. My mother ( plant ) ………………………. flowers in the garden at the moment. 8. Why ……………. you ( leave) …………….. the party early last night? 9. ……….. Minh ( go ) ………………… to the dentist tomorrow morning? 10. Michael ( play) ………………. the piano since he ( be ) ……………… three.

cho x+y =3 . Tính giá trị biết A =x^@ +2xy +y^2 -4x +1

a+4b>=16ab/1+4ab vs a,b là số dương

C1 : Tìm tất cả các cặp số nguyên tố (p,q) thỏa mãn p^3+ q3 +1 = p2q2 C2 : Có bao nhiêu bộ ba các STN (x,y,z) thỏa mãn xyz = 32016 với x bé hơn hoặc = y bé hơn hoặc = z bé hơn x +y

cho x+y =3 và x.y =2 . Tính A =x^3 +y^3

Giúp mình với mình cần gấp ạ :))

Vẽ cho mình pic sau nha mình sẽ vote 5*

Tìm tất cả các cặp số nguyên tố (p,q) thỏa mãn p^3+ q3 +1 = p2q2

Mn làm giúp mình bài 2 với mình cần gấp, cảm ơn ạ