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Trần Phương Nhi
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The number of old people is increasing rapidly in many countries. This has both advantages and disagvantages for each country.

Due to their extensive experience in life, they can guide the youth generation. As a illustration, when teenagers have to face a complicated problem, they often seek advice from someone older than them. Moreover, teachers, researchers or politicians usually require experience and elderly people can easily contribute to that country's career.

On the contrary, in some countries where the economic develops slowly, old people are often a burden. People in those countries have to suffer from vast poverty and elderly people often don't work. Moreover, young genaration cannot earn enough money to pay taxes and even survive.

Katy
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Lê Song Phương
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Lê Song Phương
6 tháng 1 2022 lúc 5:57

Note: You must write your answer in English.

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Lê Song Phương
6 tháng 1 2022 lúc 5:57

Note: You must write your answer in English.

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Nguyễn Nam Dương
6 tháng 1 2022 lúc 13:52

Exchange 2h30' = 2.5h

Let the real speed of the canoe be x (km/h) (x > 0)

=> Speed ​​downstream: x + 8 (km/h)

Upstream speed: x-8 (km/h)

According to the arle we have (x+8).2 = (x-8).2.5 => 2x+16 = 2.5x - 20 => 0.5x = 36 => x = 72 (km/h)

=> distance from A to B = (72+8).2 = 160km

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thị my
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Đỗ Thanh Hải
13 tháng 3 2021 lúc 20:57

the last time we saw her was of Christmas day.->We haven’t seen her since Chrismas day

I haven’t eaten this kind of food before.->this is the first time I have eaten this kind of food

It started raining an hour ago.->It has been raining for an hour

We haven’t visited my grandfather for two months.-> We last visited my grandfather two months ago

i have studied English for three years.->I began studying English three years ago

My brother hasn’t seen his best friend for nearly five years.->the last time we saw his best friend was nearly five years ago

When did you start  learning English ?->How long have you learned English?

We started living here fifteen years ago.->We have lived here for fifteen years

The last time she visited me was five years ago.->She hasn’t visited me for five years

I last wrote to my uncle in july .->I haven’t written to my uncle since July

It’s long time since we became close friend .->We have become close friend for long time

Minh began to collect stamps in 2000 .->Minh has collected stamps since 2000

Hoàng Hạnh Nguyễn
13 tháng 3 2021 lúc 20:57

Viết lại câu sao cho nghĩa không đổi:

the last time we saw her was of Christmas day.

->We haven’t seen her since Chritmas day.

I haven’t eaten this kind of food before.

->this is the first time I have eaten this kind of food.

It started raining an hour ago.

->It has rained for an hour.

We haven’t visited my grandfather for two months.

-> We last visited my grandfather two months ago.

i have studied English for three years.

->I began studying English three years ago.

My brother hasn’t seen his best friend for nearly five years.

->the last time my brother saw his best friend was nearly five years ago.

When did you start  learning English ?

->How long have you learnt English?

We started living here fifteen years ago.

->We have lived here for fifteen years.

The last time she visited me was five years ago.

->She hasn’t visited me for five years.

I last wrote to my uncle in july .

->I haven’t written to my uncle since July.

It’s long time since we became close friend .

->We have become close friend for long time.

Minh began to collect stamps in 2000 .

->Minh has collected stamps since 2000.

Minh Nguyệt
13 tháng 3 2021 lúc 20:57

Viết lại câu sao cho nghĩa không đổi:

the last time we saw her was of Christmas day.->We haven’t...seen her since Christmas day..................

I haven’t eaten this kind of food before.->this is......the first time I have eaten this kind of food....................

It started raining an hour ago.->It has.......rained for an hour......................

We haven’t visited my grandfather for two months.->.......The last time we visited my grandfather was two months ago...................

i have studied English for three years.->I began .....to study English three years ago..............

My brother hasn’t seen his best friend for nearly five years.->the last time.....my brother saw his best friend was nearly five years ago.........

When did you start  learning English ?->How long...have you learned English.............

We started living here fifteen years ago.->We have........lived here for fifteen years......................

The last time she visited me was five years ago.->She hasn’t.....visited me for five years............

I last wrote to my uncle in july .->I haven’t .....written to my uncle since July........................

It’s long time since we became close friend .->We have....become close friend for long time ....................

Minh began to collect stamps in 2000 .->Minh has......collected stamps since 2000......................

lê phương
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Khinh Yên
9 tháng 8 2021 lúc 21:42

did he last write to you?

we 've ever eaten this kind of food

Phạm Mai Linh
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_silverlining
26 tháng 7 2017 lúc 21:25

Bài 1: Rewrite sentences, using the provided word keep meaning as that of the root one

1. Thousands of people have to build that castle for him for years

=> That castle.......has been built for him by thousands of people for years......................................................................

2. She has never read this book before

=>It is........the first time she has read this book.......................................

3. He failed in the examination last year

=> He did not.........pass the exam last year..................................

4. I haven't eaten this kind of food before

=> This is the first.....time i have eaten this kind of food.................................

Vũ Trần Ngọc Châm
26 tháng 7 2017 lúc 21:29

1. That castle have to be built for him for years by thousands of people.

2. It is the first time she has read this book.

3. He did not pass in the examination last year.

4. This is the first time I have eaten this kind of food.

Tiểu Thư họ Nguyễn
26 tháng 7 2017 lúc 21:29

Bài 1: Rewrite sentences, using the provided word keep meaning as that of the root one

1. Thousands of people have to build that castle for him for years

=>That castle have to be built by thousands of people for him for years.

2. She has never read this book before

=>It is never for her to read this book before

3. He failed in the examination last year

=> He did not pass the last year examination.

4. I haven't eaten this kind of food before

=> This is the first time I have eaten this kind of food.

layla Nguyễn
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Mai Thị An
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Mai Thị An
30 tháng 10 2021 lúc 12:00

pls help me

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Vũ Ngọc Minh Anh
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Khánh An
20 tháng 12 2021 lúc 11:03

(C) Speaking

Nguyễn Hương Thảo
20 tháng 12 2021 lúc 11:03

(C) Speaking

Hai Le
20 tháng 12 2021 lúc 11:24

(C) Speaking