Ex3. Complete the sentences below with the correct tenses. 1. When I (look) ……....…… out of the window, I (see) ……....…… John. 2. When he (lock) ……....…….… the door, he (drop) ……....…… his key. 3. My father (wash) ……....……… his car while my mother and I (water) ……....……… the garden. 4. I (not find) ……....……… my ring yet which I (lose) ……....……… at the party yesterday. 5. While Tom (play) ……....…… tennis, Ann (take) ……....…… a shower. 6. Mike (play) ……....……… on his PC now. How long (I/ play) ……....………….…? 7. When I (work) ……....……… upstairs, the phone (ring) ……....……… . 8. The headmaster (enter) ……....…..… the classroom when they (write) ………...…… their exams. 9. I (fall) ……....…… asleep yesterday when I (watch) ……....….… TV. 10. When I (wake) ……....…… up, the burglar (disappear) ……....……… .

giải pt : $x^{2}$ -5xy + 6 $y^{2}$ + 1 = 0

Các bạn giúp mình bài 2 với bài 3 với.

Tìm GTLN: căn(x^2+2x+1)+ căn(x^2-2x+1)

Phân tích đt thành ntc a, x^4+2008x^2+2007x+2008 b, x^2(x^4-1)(x^2+2)+1

Chuyển thành câu bị động, không cần giải thích, ghi câu ra là được, cần gấp : - John hasn't finished his homework

Cho phương trình log3(x^2+4mx)+log1/3(2x-2m-1)=0. Gọi S là tập giá trị m để phương trình có nghiệm duy nhất. NOTE: 3 và 1/3 là cơ số.

Viết giúp em bài nói này với ạ .... tầm 7 đến 8 dòng. Talking about one of my favorite tv shows

Hãy tính số trường hợp OLL của khối rubik cube

complete each of the sentences with the appropriate word from the box [glance; appreciate; idol; wad; screaming; floppy; embrace; dip; fuss; imitate] 1) a lot of teenagers make Bi Rain thief___ 2) Jossie make a___because the soup was salty 3) They were locked in a passionate_____on the station platform 4) I only had time for a quick_____at the paper this morning 5) No computer can ____the complex functions of the human brain 6) John reached into his pocket pulled out a____of notes 7)The first____from the movie has now been released 8) She said she heard 2 gunshots with a woman______in between 9)She wore a____, neon-green cotton sun hat 10) Thanks ever so much for your help i really____it giúp mình nha thanks