BÀI 1

1. Listen! The little girl is singing in the next room.

2. Erika usually watches television before going to bed.

3. Is the Pikes working in the garden now?

4. My grandmother doesn't eat meat at all.

5. Do you speak any other languages apart from English?

BÀI 2

1. My sister often walks to the supermarket.

=> My sister often goes to the supermarket on foot.

2. MRS.Hoa goes to work at six forty-five.

=> Mrs.Hoa goes to work at a quarter to seven

3. He is in the bath at the moment.

=> He is taking a bath at the moment.

1. "I'm living in London now, " Charles said.

Charles said he was living in London then.

2. "You are my best friends," Jane sai to us.

Jane said that we were her best friends.

3. " I don't know what Fred is doing," Johnny said to me.

Johnny said that he didn't know what Fred was doing.

4. " We are decorating our Christmas tree," Hoa said

Hoa said that they were decorating their Christmas tree.

5. " I must go home now," he said to his friends.

He said to his friends that he had to go home then.

6. " I can't go out after 8 p.m," Hoa said.

Hoa said that she couldn't go out after 8 p.m

7. " I will come and see you as soon as I can," she said to me .

She said to me that she would come and see me as soon as she could.

8. " John wants to come here but he isn't very well," July said.

July said that John wanted to come there but he wasn't very well.

9. " I have to wear uniform when I am at school," Susan said.

Susan said she had to wear uniform when she was at school.

10. " I'm going away for a few days. I'll phone you when I get back." July said to me .

July said to me that she was going away for a few days and she would phone me when she got back.

11. " Run faster," Ba said to his teamate.

Ba told his teamate to run faster.

12. " Could you collect my new ao dai at the tailor round the corner?" Lan's mother said to her.

Lan's mother asked Lan if she could collect her new ao dai at the tailor round the corner.

Dùng hình của bạn Xuân Sáng nhé!

Ta có : \(MN=MC+CN=\frac{1}{2}AC+\frac{1}{2}CB=\frac{1}{2}\left(AC+CB\right)=\frac{1}{2}AB=\frac{1}{2}.6=3\left(cm\right)\)

2/ Give correct form of verbs

a, They have never (imagine) imagined the birthday cake (be) was so tasty !

b, Remember to lock (lock) the door before you leave

c, Your brother (not buy) didn't buy a bookshelf last week

d, I (learn) have learned English since I was 8

e, Children ought not (stay) to stay up late at night

f, The girl (stand) standing behind you is my elder sister

g, Look out! That tree (fall) is falling.

h, We should avoid (ask) asking personal question

i, Neither you nor I (be) am wrong. I believe that

An express train (travel) travelled at 90 miles per hour on the main line from London to Manchester last night when it (derail) was derailed by a tree which (lie) lied on the line. Fortunately, no one was killed (kill), although 20 passengers (take) were taken to hospital because they (suffer) suffered from minor injuries.

You want to watch the sky at sunset.

I work at a primary school.

tháo ra thôi(?!)......Nhấn đúng cho mk nha ^^

1. Thu and Nga have long hair . They are kind.

2. Bach Tuyet has long black hair . Her skin is white as snow . Her lips are red as rose . The 7 dwarfs aren't tall but they are caring and kind.

B = -x²+10x-15

   =-(x²-10x+15)

   =-(x²-2.x.5+5²+5)

   =-(x-5)²+5

mà -(x-5)² \(\le\)0 => B đạt GTLN là 5 <=> x-5=0=> x=5

C=-x²+7x-9

  =-(x²-7x+9)

tiếp theo làm tương tự nha