Chú công nhân thứ nhất sửa xong một đoạn đường trong 4 giờ. Chú công nhân thứ hai sửa xong đoạn đường đó trong 6 giờ. Nếu cả hai chú công nhân đều cùng làm một lúc thì hết bao lâu sẽ xong đoạn đường đó ?

VIDEO 2. Watch the clip " What is the coronavirus? " and fill in each blank with NO MORE THAN TWO WORDS AND/OR A NUMBER for each blank.

1. The coronavirus is an ________________of disease that started in Wuhan, China.

2. The symptoms of this illness are a dry cough, fever and then _______________.

3. This brand new coronavirus came from animals and the source was actually a _______________ in Wuhan

4. The older people, who are ending up with this, usually _______________ and the very youngest is about 13 or 14 years old.

5. The people who have died tend actually to have _______________.

6. The new coronavirus is actually _______________ from one person to another.

7. Coronavirus is different from a flu virus, so there actually isn't any _______________ at the moment.

8. It is a brand new virus, so we don't know how it's going to _______________.

VIDEO 3. Watch the song “Hall of fame” by The Script and fill in each blank with ONE suitable word.

Yeah, you can be the (1)………………
You can be the best
You can be the King Kong banging on your chest

You can beat the world
You can beat the war
You can talk to God, go banging on his door

You can throw your hands up
You can beat the (2)……………….. (yeah)
You can move a mountain
You can break rock
You can be a master
Don't wait for luck
(3)…………………….. yourself and you gon' find yourself

Standing in the hall of fame (yeah)
And the world's gonna know your name (yeah)
'Cause you burn with the brightest flame (yeah)
And the world's gonna know your name (yeah)
And you'll be on the walls of the hall of fame

You can go the (4)………………..
You can run the mile
You can walk straight through hell with a (5)…………………..
You can be the hero
You can get the gold
Breaking all the (6)…………… they thought never could be broke.
Yeah, do it for your country
Do it for your name
How are you ever gonna know if you never even try?

Do it for your people
Do it for your pride
'Cause there's gonna be a day...
Chorus

…………..
Be a champion, be a champion, be a champion, be a champion
On the walls of the hall of fame

Be students
Be (7)……………….
Be politicians
Be preachers
(Yeah)

Be believers
Be leaders
Be (8)………………
Be champions
Be truth seekers

Chorus ……….
VIDEO 4. Watch the clip “Why we need to stop plastic pollution in our oceans?”  and answer each of the following questions with NO MORE THAN TWO WORDS AND/ OR A NUMBER.   

0. By what are the oceans killed and filled?

Throw-away plastics.

1.   How much plastic is dumped into the sea every year?

________________________________

2. What are tiny pieces of plastic called?

 ________________________________

3. What percentage of whale and dolphin species is affected by plastics?

_________________________________  

4. How much plastic will be produced between now and in the middle of the century than it has been produced in all of history?

 _________________________________

5. When it isn’t recycled, what does plastic become?

_________________________________ 

6. What do the supermarkets offer?

Plastic free_______________________

7. Which country has passed the law that keeps plastic out of national parks and beaches?

_________________________________

So sánh hai số hữu tỉ:a, -0.25 và -31/100  b,2 và 4/3 và5/4 c,-23/34 và 18/-43 d,-555/450 và 240/-180

mn giúp mik đi

54 : 6 +72 : 6 

giúp e bài này vs ạ

215x869+215x14 

cần gấp ạ c.ơn mn

Tìm x, biết:
a, (x – 8 x 25) x 4 = 0
b, (x – 4 x 15) x 3 = 60
c, (x – 50) x 4 – 3 = 97
d, 334 – (x × 3 + 30) = 184
e, (x : 3 – 15) – 72 = 28
f, (4 × x + 45) – 15 = 130

e,x:y:z=4:7:3 và x+y+3z=8

đặt 5 câu mỗi cấu trúc

CT1: chỉ sự bắt buộc không cần lí do 

CT2: chỉ sự bắt buộc có lí do

CT3: chỉ sự bắt buộc có lí do (+)

CT4: chỉ sự bắt buộc có lí do (-)

CT5: lời khuyên

bác lan đi xe máy từ a đến b.Trên nửa quãng đường đầu bác đi với vận tốc 60km/giờ và nửa quãng đường còn lại đi với vận tốc 40km/giờ. sau đó bác lan đi từ xã b về xã a với vận tốc 60km/giờ trên cả quãng đường. Hỏi xã a cách xã b bao nhiêu ? biết bác lan đi từ a đến b nhiều thời gian hơn bác lan đi từ b về a là 12 phút

$\frac{x}{2}=\frac{y}{3}$ và x + y = 5

$\frac{9}{16}-\frac{3}{16}÷\frac{3}{8}$