1. He is probably one of the most famuos player in our football team.
2. They are going to annuonce their dicision tommorow.
3. We had a happy Children's Day together.
4. He had an accident last day bacause he drove carelessly.
5. The girl make-up to beauty themselves.
6. Eating too much is unhealthy..
7. This book is interesting.I am interested in it .
8. We will have a / an successful examination.
9. Smoking is very harmful.

10. Minh is scared because he thinks the dentist is unkind.
11. The children like the colorful skirt.
12. He looks very sporty.
13. I sit and read about wonderful things.
14. The teacher was pleased with the result of your exam.
15. My brother is a careful driver.
16. Unluckily, I forgot my book at home.
17. He learns how to repair holdhouse appliances.
18. American students take part in different action at recess.
19. He is a homeless child.
20. Playing video game too much brings a lot of disadvantages.

I.Rewrite these following sentences with the word provided keep meaning as the root one.

a)Apple juice is her favourite drink.

=>She likes to drink/drinking apple juice.

b)There are many students in our class.

=>Our class has many students.

c)How much is a bowl of noodles ?

=>How much does a bowl of noodles cost?

d)He goes to work at seven fifteen.

=>He goes to work at a quater past seven.

e)My house is behind the hotel.

=>The hotel is in front of my house.

f) There are four people in her family.

=>Her family has four people.

g)My room is smaller than your room.

=>Your room is bigger than mine.

h)He goes to work seven fifteen.

He goes to work at a quater past seven.

i)The Nile River is longer than the Mekong River

=>The Mekong River is shorter than Nile River.

j)Our house is far from the school.

=>Our house is not near the school.

tổng số cây trong hoa viên=20x5=100(cây)

sau năm đầu tiên,số cây rung đi =5x3=15(cây)

sau năm đầu tiên,số cây mọc thêm=5x5=25(cây)

sau năm đầu tiên,số cây có là:100-15+25=110(cây) tức là sau năm thứ 1 thì có thêm 10 cây

sagn đến năm thứ 2 ,số cây trong hoa viên sẽ là:110-5x4+5x2=100(cây)tức là sau năm thứ 2 số cây lại giảm đi 10

như vậy cứ 2 năm liên tiếp thì số cây mọc lên và rụng đi là như nhau nên số cây ko đổi

vậy sau 10 năm như thế,số cây vẫn là 100

Thế em có cần đk nữa không vậy ạ?

\(\left(x-7\right)\left(xy+1\right)=9=3.3=\left(-3\right).\left(-3\right)=1.9=9.1=\left(-9\right).\left(-1\right)=\left(-1\right).\left(-9\right)\)

Giả thiết 1:

\(\left(x-7\right)\left(xy+1\right)=3.3\)

\(\Rightarrow\left(x-7\right)=3;\left(xy+1\right)=3\)

\(\Rightarrow x=10\)

Thay x = 10 vào \(\left(xy+1\right)=3\Leftrightarrow\left(10y+1\right)=3\Rightarrow y=\frac{1}{5}\)

Do y không nguyên nên loại giả thiết 1.

Các trường hợp còn lại làm tương tự. Nếu x và y đều nguyên thì nhận giả thiết đó.