Gọi chiều rộng là a(m)

Vì tăng chiều rộng lên 14m ta được hình vuông

=>chiều dài là a+14(m)

Nửa chu vi là 112:2=56(m)

=>a+a+14=56

=>2a=42

=>a=21

=>chiều rộng là 21m

=>chiều dài là 21+14=35m

=>diện tích hcn là 21x35=735m\(^2\)

\(\dfrac{11}{20};\dfrac{6}{8}=\dfrac{3}{4}=\dfrac{3\times5}{4\times5}=\dfrac{15}{20}\)

Vì \(\dfrac{11}{20}< \dfrac{15}{20}\rightarrow\dfrac{11}{20}< \dfrac{6}{8}\)

\(\dfrac{20}{50}=\dfrac{2}{5};\dfrac{1}{5}\)

Vì \(\dfrac{2}{5}>\dfrac{1}{5}\rightarrow\dfrac{20}{50}>\dfrac{1}{5}\)

\(\dfrac{3\times8\times11}{33\times4}=\dfrac{3\times11\times4\times2}{3\times11\times4}=2\)

1.will be having

2.will pick/arrive

3.invented

4.doesn't finish

5.got/had prepared

on nha vì đi the ngày mặc cho mấy cái kia (cô dạy)

1.will live

2.will help

3.will go

4.will grow

5.will go

11.C

12.B

13.D

14.A

15.A

16.D

17.B

18.C

19.B

20.D

1.D

2.A

3.B

1. The nurse put a lot of effort, but she still couldn’t save the man’s life.

In spite of the putting a lot of effort,she still couldn’t save the man’s life

2. Life in the city is not the same as life in the countryside.

Life in the city is different from life in the countryside.

3. Sharon started working as a tour guide five years ago.

Sharon has worked as a tour guide for five years.

4. Do you like seeing a superhero movie? (fond)

Are you fond of seeing a superhero movie?

5. They lacked fresh water because there was a long drought, (of)

 They lacked of fresh water because there was a long drought.

1. The nurse put a lot of effort, but she still couldn’t save the man’s life.

In spite of the putting a lot of effort,she still couldn’t save the man’s life

2. Life in the city is not the same as life in the countryside.

Life in the city is different from life in the countryside.

3. Sharon started working as a tour guide five years ago.

Sharon has worked as a tour guide for five years.

4. Do you like seeing a superhero movie? (fond)

Are you fond of seeing a superhero movie?

5. They lacked fresh water because there was a long drought, (of)

 They lacked of fresh water because there was a long drought.