1. Mary __doesnt love___ (not love) going fishing with her friends

2. My mum ___takes____ (take) the dog for a walk every day.

3. I can’t come there now! I __am brushing____ (brush) my teeth!

4. Where is mum? She __is making___ (make) some cookies in the kitchen.

5. My mother always __listens___ to music at nights. (listen)

6. Look! The baby __is walking__ (walk)! Ohh! This is super

7. ___do__ your friends __go_____ to church on Sundays? (go)

8. Be quite! Our teacher ___is talking____ (talk)!

9. Look! Those boys __are playing___ (play) football in the garden. Let’s go with them.

10. Our teachers ___give____ (give) us lots of homework to us.

11. “Mum! Where are you? Can you help me?” “I can’t help you now. I __am washing___ (wash) the dishes in the kitchen.

12. I usually __watch___ (watch) TV after dinner.

13. She __doenst go____ (not go) to school every day.

14. We ___are reading___ (read) Harry Potter now.

15. Look! The squirrel ___is hiding___ (hide) a hazelnut in the ground.

16. __do____ they __drink____ (drink) coffee every morning?

17. We ___love__ (love) drinking orange juice.

18. Who ___is listening___ (listen) to the radio now?

19. ___is___ Kate ___drawing____ (draw) with her friends at the moment?

20. I can’t talk right now, because I __am mowing____ (mow) the lawn

1. does not love

2. takes

3. am brushing

4. is making

5. listens

6. is walking

7. Do - go

8. is talking

9. are playing

10. give

11. am washing

12. watch

13. does not go

14. are reading

15. is hiding

16. Do - drink

17. love

18.is listening

19. Is - drawing

20. am mowing

1. Mary _______doesn't love_____ (not love) going fishing with her friends

2. My mum ____takes________ (take) the dog for a walk every day.

3. I can’t come there now! I _______am brushing_____ (brush) my teeth!

4. Where is mum? She _______is making_____ (make) some cookies in the kitchen.

5. My mother always ________listens____ to music at nights. (listen)

6. Look! The baby _____is walking_______ (walk)! Ohh! This is super

7. ___Do_________ your friends ______go______ to church on Sundays? (go)

8. Be quite! Our teacher ______is talking______ (talk)!

9. Look! Those boys _____are playing_______ (play) football in the garden. Let’s go with them.

10. Our teachers ________give____ (give) us lots of homework to us.

11. “Mum! Where are you? Can you help me?” “I can’t help you now. I ______am washing______ (wash) the dishes in the kitchen.

12. I usually _________watch___ (watch) TV after dinner.

13. She _______doesn't go_____ (not go) to school every day.

14. We _______are reading_____ (read) Harry Potter now.

15. Look! The squirrel ______is hiding______ (hide) a hazelnut in the ground.

16. ____Do________ they ________drink____ (drink) coffee every morning?

17. We ________love____ (love) drinking orange juice.

18. Who _______is listening_____ (listen) to the radio now?

19. _____Is_______ Kate _____drawing_______ (draw) with her friends at the moment?

20. I can’t talk right now, because I _____am mowing_______ (mow) the lawn

5. d

6. d

7. c

8. c

9. c

10. b

11. d

12. d

5 D

6 D

7 C

8 C

9 C

10 A

11 D

12 D

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Question 5. I don't want much sugar in my coffee. Just ______, please?
A. a few B. any C. few D. a little

Question 6. She didn't have enough time ______ all the interesting places.
A. visit B. visiting C. visited D. to visit

Question 7. Tony doesn't work ______ Antony.
A. as hard B. more hard than C. as hard as D. most hardest

Question 8. If they worked more carefully, they ______ so many mistakes.
A. won't make B. don't make C. wouldn't make D. didn't make

Question 9. He prefers soccer ______ tennis.
A. from B. than C. to D. or

Question 10. There is ______ apple, ______ banana and ______ cups of tea on the table.
A. an - a - some B. an - a - a C. a - an - some D. some - a - some

Question 11. Who will look ______ the baby while we go out?
A. out B. up C. on D. after

Question 12. "It is very kind of you to invite us to your party." - "______."
A. No, thanks. B. Good idea, thanks.
C. OK. That's great. D. It's my pleasure.

1. C

2. C

3. A

4. A

5. B

6. D

1 A

2 C

3 A

4 A

5 B

6 D

1. A

2. C

3. A

4. D

5. D

6.D

1 C

2 A

3 C

4 A

5 A

6 A

1. C

2. A

3.  B

4. B

5. B

6. B

1. C

2. A

3. B

4. B

5. B

6. B 

1 A

2 A

3 C

4 A

5 A

6 B

1. C

2. A

3. A

4. C

5. A

6. D

7.C

1. C

2. A

3. A

4. C

5. A

6. D

7.C

1 B

2 C

3 C

4 C

5 B

6 D

7 C

A

Chọn B nhé

em nên gửi đoạn văn để chi tiết bài làm nhé :>

The airport which is the most modern one is where we are going to arrive.

She doesn't want to speak to the cause for which she divorced her husband. 

The city whose architecture is stunning attracts many tourists every year. 

The girl who sits next to me in class is very friendly.

The forest which is protected by the government has diverse wildlife.

The runner who trained hard for the tournament won the championship.

The teacher who has been teaching for 20 years is retiring this year.

The doctor whom I consulted for my health issues suggested I take a vacation. 

The stadium where the concert was held was a huge success.

The leader whom the people trust has a strong vision for the future. 

The church which was built in the 16th century has beautiful stained glass windows.

My friend Alice, who moved to Canada last year, is visiting us next week.

The airport which is the most modern one is where we are going to arrive.

She doesn't want to speak to the cause for which she divorced her husband. 

The city whose architecture is stunning attracts many tourists every year. 

The girl who sits next to me in class is very friendly.

The forest which is protected by the government has diverse wildlife.

The runner who trained hard for the tournament won the championship.

The teacher who has been teaching for 20 years is retiring this year.

The doctor whom I consulted for my health issues suggested I take a vacation. 

The stadium where the concert was held was a huge success.

The leader whom the people trust has a strong vision for the future. 

The church which was built in the 16th century has beautiful stained glass windows.

My friend Alice, who moved to Canada last year, is visiting us next week.

The airport which is the most modern one is where we are going to arrive.

She doesn't want to speak to the cause for which she divorced her husband. 

The city whose architecture is stunning attracts many tourists every year. 

The girl who sits next to me in class is very friendly.

The forest which is protected by the government has diverse wildlife.

The runner who trained hard for the tournament won the championship.

The teacher who has been teaching for 20 years is retiring this year.

The doctor whom I consulted for my health issues suggested I take a vacation. 

The stadium where the concert was held was a huge success.

The leader whom the people trust has a strong vision for the future. 

The church which was built in the 16th century has beautiful stained glass windows.

My friend Alice, who moved to Canada last year, is visiting us next week.

1)

Thay \(m=2\) vào phương trình, ta có:

\(x^2 - 2(2-1)x + 2^2 - 3\cdot 2 = 0\) 

\(\Leftrightarrow x^2 - 2x - 2 = 0\)

Phương trình có hai nghiệm phân biệt:

\(x_1 = 1 + \sqrt{3}\)

\( x_2 = 1 - \sqrt{3}\)

2)

Thay \(x=-2\) vào phương trình, ta có:

\((-2)^2 - 2(m-1)(-2) + m^2 - 3m = 0\)

\(\Leftrightarrow 4 + 4(m-1) + m^2 - 3m = 0\)
\(\Leftrightarrow m^2 + m = 0 \)

\(\Leftrightarrow m(m+1) = 0\)

Vậy \(m=0\) hoặc \(m=-1\)

+Với m=0, phương trình trở thành:

\(x^2 - 2x = 0 \)

Phương trình có hai nghiệm \(x_1 = 0 và x_2 = 2 \)(loại)

+Với \(m=-1\), phương trình trở thành:
\(x^2 + 4x + 4 = 0 \)

Phương trình có nghiệm kép\( x = -2\) (nhận)

Vậy \(m=-1\) và nghiệm còn lại là\( x=-2\)

3)

a) Có hai nghiệm phân biệt

Phương trình có hai nghiệm phân biệt khi \(\Delta > 0\)

\(\Delta = [2(m-1)]^2 - 4(m^2 - 3m) = 4m^2 - 8m + 4 - 4m^2 + 12m = 4m + 4\)

\(\Delta > 0 \Leftrightarrow 4m + 4 > 0\)
\(\Leftrightarrow m > -1 \)

b) Có nghiệm kép

Phương trình có nghiệm kép khi \(\Delta = 0\)

\(\Delta = 0 \Leftrightarrow 4m + 4 = 0 \Leftrightarrow m = -1\)

Nghiệm kép của phương trình là:

\(x = \frac{-b}{2a} = \frac{2(m-1)}{2} = m-1 = -1 - 1 = -2\)

c) Vô nghiệm

Phương trình vô nghiệm khi\( \Delta < 0\)

\(\Delta < 0 \Leftrightarrow 4m + 4 < 0 \Leftrightarrow m < -1\)

B4.\(a) x_1^2 + x_2^2 = 8 \)

\((x_1^2 + x_2^2 = (x_1 + x_2)^2 - 2x_1x_2\)

\(= [2(m-1)]^2 - 2(m^2 - 3m) = 8\)
\(\Leftrightarrow 4m^2 - 8m + 4 - 2m^2 + 6m = 8 \)
\(\Leftrightarrow 2m^2 - 2m - 4 = 0\)

\(\Leftrightarrow m^2 - m - 2 = 0\)
\(\Leftrightarrow (m-2)(m+1) = 0 \)

Vậy m=2 hoặc m=-1.

\(b) 2x_1 - 3x_2 = 8\)

Ta có hệ phương trình:

\( 3x_1 + 3x_2 = 6(m-1) \ 2x_1 - 3x_2 = 8 \)

\(5x_1 = 6m - 6 + 8 = 6m + 2\)

\(\Leftrightarrow x_1 = \frac{6m+2}{5}\)

Thay vào phương trình thứ nhất, ta được:

\(\frac{6m+2}{5} + x_2 = 2m - 2\)

\(\Leftrightarrow x_2 = 2m - 2 - \frac{6m+2}{5}\)
\(= \frac{10m - 10 - 6m - 2}{5} = \frac{4m - 12}{5} \)

Ta có: \(x_1x_2 = m^2 - 3m\)\(\Leftrightarrow \frac{6m+2}{5} \cdot \frac{4m-12}{5} = m^2 - 3m \)
\(\Leftrightarrow (6m+2)(4m-12) = 25(m^2-3m) \)
\(\Leftrightarrow 24m^2 - 72m + 8m - 24 = 25m^2 - 75m \)
\(\Leftrightarrow m^2 - m - 24 = 0 \Leftrightarrow (m-5)(m+4) = 0\)

Vậy\( m=5\) hoặc\( m=-4\)

\(c) \left|x_1 - x_2\right| = 4\)\(\left|x_1 - x_2\right|^2 = 16 \Leftrightarrow (x_1 - x_2)^2 = 16\)
\(\Leftrightarrow (x_1 + x_2)^2 - 4x_1x_2 = 16 \Leftrightarrow [2(m-1)]^2 - 4(m^2 - 3m) = 16 \)\(\Leftrightarrow 4m^2 - 8m + 4 - 4m^2 + 12m = 16\)
\(\Leftrightarrow 4m = 12 \Leftrightarrow m = 3\)

\(d) |x₁| + |x₂| = 4\)

TH1: x₁, x₂ > 0

\(x₁ + x₂ = 2(m - 1) = 4 ⇔ m = 3\)\(x₁x₂ = m² - 3m = 0 ⇔ m = 0 hoặc m = 3 \)

Vậy \( m = 3\) (nhận)

TH2: x₁, x₂ < 0

\(x₁ + x₂ = 2(m - 1) = -4 ⇔ m = -1\)

\(x₁x₂ = m² - 3m = 4 ⇔ m = 4\) hoặc m = -1

Vậy \(m = -1\) (nhận)

TH3: x₁ > 0, x₂ < 0

x₁ - x₂ = 4

\(x₁ + x₂ = 2(m - 1)\)

\(2x₁ = 2m + 2 ⇔ x₁ = m + 1\)

\(2x₂ = 2m - 6 ⇔ x₂ = m - 3\)\(x₁x₂ = m² - 3m = (m + 1)(m - 3) ⇔ m² - 3m = m² - 2m - 3 ⇔ m = 3 \)Vậy m = 3 (nhận)

TH4: \(x₁ < 0, x₂ > 0\)

-x₁ + x₂ = 4

\(2x₁ = 2m - 6 ⇔ x₁ = m - 3\)

\(x₁ + x₂ = 2(m - 1)\)

\(2x₂ = 2m + 2 ⇔ x₂ = m + 1 \)

\(2x₁ = 2m - 6 ⇔ x₁ = m - 3 \)

\(x₁x₂ = m² - 3m = (m - 3)(m + 1) ⇔ m² - 3m = m² - 2m - 3 ⇔ m = 3 \)Vậy m = 3 (nhận)

=>m = -1 hoặc m = 3

Bạn chọn sai môn r nhé!