1, This is Mrs Trang .She is my sister. Her husband is Mr tung . He is an engineer.

2, Lan and Huong are in the classroom .They are students .

3, Mrs. and Mr.Khanh are workers , and their son is a worker, too.

4, Quyen and I live in a city . Our city is very new .

5, Mr and Mrs kent are in my livingroom . They are teachers. There are 4 people in         family.

6, How old are you , Linh and Peter ?- We are 5 years old.

7, What are those ?- They are rulers.

Mua 1 cái bút chì hết số tiền là:

16000 : 20 = 800 (đồng)

Vậy mua 21 cái bút chì hết số tiền là:

21 x 800 = 16800 (đồng)

Đáp số: 16800 đồng

What are they learning to do in their room now ?

1.     Nam sometimes (go) goes fishing with his friends.

2.     We seldom (eat) eat before 6.30.

3.     The sun ( set) sets in the West.

4.     It (be) is often hot in the summer.

5.     She always (cook) cooks in the morning.

6.     My father usually (watch) watches the news at 7.00.

(x - 2)(x + 4) = 0

=> x - 2 = 0 hoặc x + 4 = 0

+) Nếu x - 2 = 0 => x = 2

+) Nếu x + 4 = 0 => x = -4

1 she teaches us english at school .       TEACHER
2 In my neighborhood , there is a park .            NEIGHBOR
3 Bac Giang has a lot of beatiful places .    BEAUTI
4 what is the highest of the mountian ?      HIGH
5 we often buy cheap bread in the bakery .       BAKE
6 they have a lot of activities  in the summer .       ACT
7 this is the oldest pagoda in Bac Giang .     OLD
8 don't ride too quickly. It is  dangerous .    DANGER
9 my house is bigger  than your house .  BIG
10 he greets me in a  way friendly .      FRIEND
11 there are four bookshelves  in my house .    BOOKSHELF
12 the photocopy in between the bakery  and the drugstore .   BAKE
13 Is your brother an actor ?   ACT
14 Mai's sister is a  singer .    SING 
15 we must be careful when we cross the road .        CARE
16 this tree has a lot of green leaves    LEAF
17 Is your father a businessman ?  BUSINESS
18 I'm Vietnamese.What's your nationality ?     NATION
19  Air pollution  is a big problem in many cities in the world .         POLLUTE
20 Yoko is from Japan. She is Japanese .     JAPAN
21 Anna likes attending the English speaking  contests .      (SPEAK)
22 My neighborhood is famous  for good and cheap restaurants .  (FAME)
23 I like the city live because there are many kinds of entertainmant .   (ENTERTAIN)
24 Van's classroom is on the second   floor .     (TWO)
25 these children like sunny   weather. (SUN)
26 Lan speaks English better  than me .   (WELL)
27 The Great Wall of China is the world's longest   structure . (LONG)
28What's Maco's nationatily ? - She is British.     ( NATION)
29 don't make a fire here.It's very dangerous .     (DANGER)
30 there are a lot of beatiful  mountians in Vietnam .  (BEAUTY)
31 This is the oldest  pagoda in our country .   (OLD)
32 SHE IS VERY BEATIFUL . (BEAUTY)
33 It is very noisy in the city . (NOISE)
34 her teeth    are small and white. (TOOTH)
35  there are two secretaries in his office .   (SECRETARY)
36 do you know the writer  of this book?  (WRITE)
37 THIS is my favorite chair.It's so comportable . (COMFORT)
38 my father often finishes  his work at 4.30 .   ( FINISH)
39 The Mekong River is the longest river in Vietnam .    (LONG)
40  Tokyo is bigger  than London . ( BIG) 
41 Ho Chi Minh city is the biggest city in Vietnam . ( BIG)
42 Petronas Twin Towers is taller   than Sears Tower . (TALL)
 43 My sister is older than me .   (OLD)
44 Nam is shorter  than Ba.He is the shortest  boy in Vietnam .    (SHORT) 
45 Phanxipang is the highest  mountian in Vietnam . ( HIGH)
46 These books are thicker than those books .   (THICK)
47 It's the tallest  building in this city.    (tall)
48 The Nile River is longer  than the Amazon River . (long)
49 My aunt has two children,one boy and one girl .     (CHILD)
50 In the library we read about wonderful things .  ( WONDER)

câu 2::mr.minh teaches us english at school.
=>Who is teach you english at school?
câu 3: there are four seasons in my country.
=>How many seasons are there in your country?
câu 4: she buys two bars of soap
=>What does she buy?
Câu 5: my father drinks coffee in the morning
=>What is your father drink in the morning?
câu 6:my father go to work six days a week
=>How often does your father go to work?
câu 7:hoa's school is on Le Loi street
=>Where is Hoa's school?
câu 8: yes she walk to work every day
=>Is she walk to work every day?
câu 9: my father usually takes a shower in the morning.
=>How often does your father take a shower in the morning?
câu cuối: they are listening to music at the monment
=>What are they doing at the moment?

a. 5(x-7)-4(x+5)=3.5-12

 5x - 5.7 -4x - 4.5 = 15 -12 

x(5-4) -35-20 = 3

x -55 = 3

x = 3+55 

x = 58

vậy x = 58

b. (2x -15)⁵= (2x -15)³

vì (2x -15)⁵= (2x -15)³

=> (2x -15)⁵  = 1 hoặc (2x -15)⁵  = 0 

=> (2x -15)⁵  = 1⁵ hoặc (2x -15)⁵  = 0⁵

=> 2x-15 =1   hoặc 2x-15 = 0

=> 2x = 1+15 hoặc 2x = 0+15

=> 2x =16   hoặc 2x = 15

=> x = 16:2 hoặc x = 15:2

=> x= 8  hoặc x = 7,5 

Vì x \(\in\)N => x = 8

vậy x = 8

Hãy viết ngày, tháng , nam , mùa tiếp theo vào ô trống dưới đây:

1. Monday =>Tuesday

2. August =>September

3. Spring =>Summer

4. November=> December

5. Friday=>Saturday

6.  March=>April

7. January =>Febuary

8. Autumn =>Winter

9. Wednesday =>Thursday

10. July =>August