0,15 tạ = 15 kg

Bao gạo đó nặng là:

\(15\div\frac{3}{4}=20\) (kg)

Bao gạo đó nặng là:

\(20\times\frac{4}{5}=16\) (kg)

ĐS:...

In the first year of lower secondary 1…………SCHOOL…………., I had some difficulties in learning English. My English pronunciation 2……………WAS…………. really bad and my English grammar was worse. I did not 3…………KNOW……………..how to improve them. I didn’t want my father 4……………AND…………… mother to know about this. One afternoon after the lesson, my teacher 5………………OF….......................... English told me to wait 6………………FOR…………… her outside the classroom. She took 7……………ME…………… to the school library and showed me tapes of pronunciation drills kept in a glass bookcase. She also told me how to use an English- English dictionary to 8……………IMPROVE………………. my English grammar. “Now I think you know what you should do” she said. I made much progress and only one year later, I won the first 9…………PRIZE………… in the English Speaking Contest 10………HELP……………for secondary school students in my hometown.

1. They have planted a lot of green trees this year

A lot of green trees…………………………………have been planted this year……………………………………...

2. '' I don't behave very well in front of a crowd, '' said Peter.

Peter said that…………………………………he didn’t behave very well in front of a crowd.……………………………………

3. The town was farther than we thought.

The town wasn’t as………………………………near as we thought………………………………………..

4. We spend five hours studying English everyday.

It………………………………takes us five hours to study English everyday…………………………………………………………..

5. “You had better not eat much sugar.”

She advised me………………………………not to eat much sugar…………………………………………….

6 . “ Can you wait for me outside the movie theatre ?”

He asked his friend………………………………to wait for him outside the movie theater.………………………………………..

7. “ Don’t be silly.” He said to the boy.

He …………………………told the boy not to be silly……………………………..………………………………..

8. We can’t drink the water because it’s too hot.

The water isn’t……………………………cold enough for us to drink……………………………………………….

9. It has been raining for five hours.

It started……………………………raining five hours ago……………………………………………………...

10. To help mom at home is a good activity.

It is…………………………..…………………………a good activity to help mom at home…………………………………

2,5 * x < 7

x < 7 : 2,5

x < 2,8

mà x là số tự nhiên nên x = 0;1;2

Vì 5-4+2= 3, 2+0 = 2. Mà 3>2 nên kết quả là đúng

1. While I (watch) 1…………………WAS WATCHING…………………… a good film on TV, the mailman

(come) 2……………CAME…..……….. and (give) 3………………GAVE…………. …..me a letter.

2. I ( know) 4…………………HAVE KNOWN……………………… her for six years, when I met her, she

(work) 5…………………WAS WORKING……………………… for a foreign company.

3. Please stop laughing. I hate (laugh) 6…………BEING LAUGHED………………. .……..…..…at by others.

4. It ( not rain) 7………………………DOESN'T RAIN…………………………………much in the winter .

5. They’d rather you ( not come)…………………DIDN'T COME……………………..to the party too late.

6. You ARE always (watch) 9…………………WATCHING…………………...…. television. You should do

something more active.

7. This building ( build) 10………..…………WAS BUILD…………………… ……over 100 years ago.

1. A. claim B. wait C. said D. paid

2. A. watch B. bath C. want D. wash

3. A. sure B. mixture C. injure D. pleasure

4. A. few B. new C. threw D. knew

5. A. clothes B. matches C. colleges D. churches

6. A. watched B. naked C. liked D. looked

7. A. sunbathe B. father C. theater D. weather

8. A. pour B. four C. flour D. resource

9. A. clear B. wear C. bear D. ware

10. A. sixty B. my C. sky D. fly

1. In 2013, the World Water Week will be held under the theme “Water _______COOPERATION_________-Building Partnerships”. (COOPERATE)

2. __________UNFORTUNATELY____________, dark clouds soon appeared and it began to rain. (FORTUNE)

3. Laura is the most ___________BEAUTIFUL_______________ person in our group. (BEAUTY)

4. Many _________REPRESENTATIVES_____________ of the older generation were there. (REPRESENT)

5. She has cut herself, and it is _________BLEEDING___________ quite badly. (BLOOD)

6. His health was seriously affected and he suffered from constant ___________SLEEPLESSNESS__________. (SLEEP)

7. Bao is __________EXTREMELY______________ kind and generous to everyone. (EXTREME)

8. I’m pleased to hear that you had an __________ENJOYABLE______________ Christmas vacation. (ENJOY)

9. This knife is __________USEFUL_______________ - it can cut everything. (USE)

10. The Scouting Association is the largest _________VOLUNTARY____________ youth organization in the world. (VOLUNTEER)