Số phần nước sau 2 lần vòi chảy vào bể là:

\(\dfrac{1}{6}+\dfrac{2}{7}=\dfrac{19}{42}\) ( bể )

Số phần bể chưa có nước là:

\(\dfrac{42}{42}-\dfrac{19}{42}=\dfrac{23}{42}\) ( bể )

Đáp số:...

B nhek

the length from here to the stadium.

have they held the festival?

Jim was born was on May 20, 2001.

Is it possible for me to ask you some questions about your favorite festival?

to reduce

lived

turned

went

made

he wanted some coffee

they would make a taxi there

if I turned off the air conditioner?

if I was doing my homework.

I asked him what his name was.

suprised

amusing

angrily

suprisingly

compliment

ideal

creative

preservation

decided

1. are / in / The children / playing / school yard. / the 

The children are playing in the school yard.

2. Lan / lots of / friends / has / school. / at

Lan has lots of friends at school. 

3. a house in the countryside. / is / A house in the city / more / normally / expensive than /

A house in the city is normally more expensive than a house in the countryside.

D

Thk Sans đừng có linh tinh

Ne vờ

2.There are so many billboards in our city. People can not enjoy the view.

If …there are so many billboards in our city, people can not enjoy the view.

3.There is so much light in the cityat night.We can not see the stars clearly.

If …there is so much light in the city at night, we can not see the stars clearly.

4.We turn on the heater all the time. We have to pay three million dong for electricity a month.

If …we turn on the heater all the time, we have to pay three million dong for electricity a month.

5.The karaoke bar makes so much noise almost every night. The residents complain to its owner.

If …the karaoke bar makes so much noise almost every night, the residents will complain to its owner.

6.She has a headache after work every day.She works in a noisy office.

If …she has a headache after work every day, she will work in a noisy office.