Bạn nào cho mình hỏi mấy câu này với:
1.If you_______your homework, let's play volleyball with them in the garden.
A. finish B. are finishing C. have finished D. will finish
2. Study is no______restricted to just one location.
A. longer B.long C.longest D. the longest
3. They as well as Mai_______in the field at this time last Sunday.
A. was working B.were working C. has worked D. have worked
4. My sister regretting_______Mai's glasses yesterday.
A. to break B.broken C.breaking D.break
5. One hundred dollars_______an big amount of money for her.
A.is B.are C.were D.is being
6. Thanks______Alexander Graham Bell's invention, I can communicate with each other easily.
A.for B.from C.on D.to
7.Minh loves playing chess_______his sister enjoys skipping in their free time.
A.when B.because C.while D.during
Giúp mình với! Mình đang cần gấp 
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
hình như ko phải mk k gặp cái đó nhưng dù sao thì mk cx đc 280 điểm rồi......
chúc bn thi tốt vòng 16 dễ lắm ^_^
tk nha
sao mk mở vào trang web ấy ko dc ? Bn bày cho mk bn mở ở trang nào với ? Rồi mk k cho
1. Nam (never / eat) _____hasn't eaten__________ pizza before.
2. He (study) _______has studied_________ English for two hours every day.
3. Khoa (like) _____likes__________ omelette very much. It’s his favorite food.
4. My grandmother hates (eat) ____eating___________ noodles. She prefers rice.
5. Thanh (study) ________is studying_______ Physics at the moment.
6. I can’t sleep because the children (play) _______ play________ the drum in the living room.
7. I enjoy (fish) ___fishing____________ because it (be) ______is____________ relaxing.
8. I think, in the future people (not play) ____won't play____ individual games.
9. We find (arrange) ______arranging_________ flowers interesting because it (help) ______helps_________ us relax.
10. I (not collect) _______won't collect________ dolls when I grow up.
11. ______Have_________ Lan (do) _____done__________ her project yet?
12. ________Have_______ you ever (eat) ______eaten_________ Sushi?
13. We (go) _____went__________ to that village to do volunteer work last week.
14. Tom (call) ________called_______ his boss yesterday.
15. She often (go) ____Does she often___________ to the market with her mother once a week?
16. We (visit) ___are going to visit____________ Ha Noi next month.
17. Lan and her father (visit) _______visited________ the Temple of Literature 2 weeks ago.
18. They (not start) _______haven't started________ the project yet.
19. I (have read) _____have read__________ that novel by Hemingway several times.
20. I think in the future, people (explore) ______will explore_________ the nature in stead of watching T.V
trước khi trả lời mình muốn bạn ks đúng câu này cho mình được không?
Theo đầu bài thì tổng của tất cả số HS và tất cả số HS và 1/2 số HS và 1/4 số HS của lớp sẽ bằng: 100 - 1 = 99 (em)
Để tìm được số HS của lớp ta có thể tìm trước 1/4 số HS cả lớp.
Giả sử 1/4 số HS của lớp là 1 em thì cả lớp có 4 HS
Vậy : 1/4 số HS của lớp là : 4 : 2 = 2 (em).
Suy ra tổng nói trên bằng : 4 + 4 + 2 + 1 = 11 (em)
Nhưng thực tế thì tổng ấy phải bằng 99 em, gấp 9 lần 11 em (99 : 11 = 9) Suy ra số HS của lớp là : 4 x 9 = 36 (em)
Thử lại: 36 + 36 = 36/2 + 36/4 + 1 = 100
Đáp số: 36 học sinh.
lấy cái dép táng cái bản mặt của con bạn vì đã xem dratelling quá nhiều
Bài 1:
\(\Leftrightarrow\left[{}\begin{matrix}y=0\\y=3\end{matrix}\right.\)
\(\left(X^2+2x+1\right)+\left(4y^2+\frac{4.1y}{4}+\frac{1}{16}\right)+2-\frac{1}{16}.\)
\(\left(x+1\right)^2+\left(2y+\frac{1}{4}\right)^2+\frac{15}{16}\ge\frac{15}{16}\)
\(x^2+4y^2+2x-y+2\)
\(=\left(x^2+2x+1\right)+\left[\left(2y\right)^2-2.2y.\frac{1}{4}+\left(\frac{1}{4}\right)^2\right]+\frac{15}{16}\)
\(=\left(x+1\right)^2+\left(2y-\frac{1}{4}\right)+\frac{15}{16}\)
Ta có: \(\hept{\begin{cases}\left(x+1\right)^2\ge0\forall x\\\left(2y-\frac{1}{4}\right)\ge0\forall y\end{cases}\Rightarrow\left(x+1\right)^2+\left(2y-\frac{1}{4}\right)+\frac{15}{16}\ge\frac{15}{16}}\)
Dấu " = " xảy ra \(\Leftrightarrow\hept{\begin{cases}\left(x+1\right)^2=0\\\left(2y-\frac{1}{4}\right)=0\end{cases}\Leftrightarrow\hept{\begin{cases}x+1=0\\2y-\frac{1}{4}=0\end{cases}\Leftrightarrow}\hept{\begin{cases}x=-1\\y=\frac{1}{8}\end{cases}}}\)
Vậy GTNN của \(x^2+4y^2+2x-y+2=\frac{15}{16}\Leftrightarrow\hept{\begin{cases}x=-1\\y=\frac{1}{8}\end{cases}}\)
Tham khảo nhé~
1.If you_______your homework, let's play volleyball with them in the garden.
A. finish B. are finishing C. have finished D. will finish
2. Study is no______restricted to just one location.
A. longer B.long C.longest D. the longest
3. They as well as Mai_______in the field at this time last Sunday.
A. was working B.were working C. has worked D. have worked
4. My sister regretting_______Mai's glasses yesterday.
A. to break B.broken C.breaking D.break
5. One hundred dollars_______an big amount of money for her.
A.is B.are C.were D.is being
6. Thanks______Alexander Graham Bell's invention, I can communicate with each other easily.
A.for B.from C.on D.to
7.Minh loves playing chess_______his sister enjoys skipping in their free time.
A.when B.because C.while D.during
1.If you_______your homework, let's play volleyball with them in the garden.
A. finish B. are finishing C. have finished D. will finish
2. Study is no______restricted to just one location.
A. longer B.long C.longest D. the longest
3. They as well as Mai_______in the field at this time last Sunday.
A. was working B.were working C. has worked D. have worked
4. My sister regretting_______Mai's glasses yesterday.
A. to break B.broken C.breaking D.break
5. One hundred dollars_______an big amount of money for her.
A.is B.are C.were D.is being
6. Thanks______Alexander Graham Bell's invention, I can communicate with each other easily.
A.for B.from C.on D.to
7.Minh loves playing chess_______his sister enjoys skipping in their free time.
A.when B.because C.while D.during