IV

1 moon

2 when

3 for

4 from

5 living

6 understands

7 hungry

8 developes

VI

1 is written

2 is folded

3 is put

4 is sent

5 is collected

6 is sorted 

7 is taken

8 is delivered

IV

1 moon

2 when

3 for

4 from

5 living

6 understands

7 hungry

8 developes

VI

1 is written

2 is folded

3 is put

4 is sent

5 is collected

6 is sorted 

7 is taken

8 is delivered

gửi bạn nha

Bài 8:

Gọi số chưa biết là x

Theo đề, ta có: 0,75x+30%(0,75x)=19,5

=>x=20

Bài 10:

a: =254-254+135=135

1 Facsimile was invented by Alexander Bain

2 Ha Long Bay was recognized as one of the world's seven wonders

3 Can garbage be used to make compost?

4 Romeo and Juliet was written by Shakespeare in 1592 

5 Did the Wright brothers build the first plane in 1903?

6 Our factory doesn't produce this kine of paper

7 People have used ball point pens for many years

7 Whitcomb L.Judsin invented the zipper in 1893

1 about - in

2 In - to

3 from - of - in

4 in - at - during

5 in - on

6 about

7 from

8 as

9 by - in - in

10 to - in

Công thức gì

???