ok mình sẽ làm và ủng hộ

ok mình sẽ ủng hộ

The work is very hard and he can't do it = This work is too hard for him to do

=> This work is too difficult and he can't do it.

yes, I do hoặc no,I do not

no, i do not

1. yesterday, I went  to the retaurant . 

1. yesterday, I wen  to the retaurant . 

3 thì nhé

minh cần 3 thể khẳng định phủ định và nghi vấn bn nhé

Lan used to go playing hide-and-seek

cảm ơn nhan

Halong Bay is one of the famous sights of our country. If you go to visit once, you will forever remember its magnificent beauty. You know, Ha Long beauty is first of all the greatness of nature. On a narrow area there are thousands of undulating islands dragon phoenix. Ha Long Bay at the moment immense, when narrowed into a pond, into the puddle, bending around the island as green silk. The four seasons of Ha Long Bay covered in a blue color: blue sea of ​​blue, mountain blue, blue sky. Tourists from all over the world come here to admire the magnificent beauty of the bay. Therefore, Halong has twice been recognized as a natural heritage of the world. Mountains, beautiful water of Ha Long is a beautiful part of Vietnam River. Once you visit Ha Long, I believe you will want to visit again many times me.

Số muối chứa trong nước biển là :

500 : 100 x 3 = 15 ( kg )

Lượng dung dịch khi đó là :

15 : 2 x 100 = 750 ( kg )

Số nước lã cần đổ vào là :

750 - 500 = 250 ( kg )

Đáp số : 250 kg 

Số muối trong nước biển là :

              500 : 100 x 3 = 15 ( kg )

Lượng nước để dung dịch chứa 2% muối là :

              15 x 100 : 2 = 750 ( kg nước )

Số nước cần đổ thêm là : 

              750 - 500 = 250 ( kg nước )

                               Đáp số : 250 kg nước

They are playing badminton.

cong chua phep thuat

what are they doing? (họ đang làm gì thế)

They doing  + động từ chỉ hoạt động .

đúng thì k mk nhé^^

- What do you do to keep fit and stay healthy ?

To keep fit and stay healthy usually go for a walk, do some sports activities,eat balanced meals. Sometimes, i go for a walk and go swimming.