Hai câu đầu đúng rồi
What is in this beautiful box?
B. for

19 B
20 B
21 B
22 B
23 C
24 C
25 A
26 A
27 C
28 B
29 D

\(\dfrac{6}{10}-\dfrac{4}{9}-\dfrac{16}{15}\)
 

\(=\dfrac{3}{5}-\dfrac{4}{9}-\dfrac{16}{15}\)

\(=\dfrac{27}{45}-\dfrac{20}{45}-\dfrac{48}{45}\)

\(=-\dfrac{41}{45}\)

5. town

1. easygoing
2. strict
3. forgetful
4. sensitive
5. optimistic
6. confident
7. stingy
8. sociable

6.

1. I'm working
2. I usually watch
3. I'm studying
4. is making
5. He's choosing
6. He often plays
7. don't usually go out
8. they have
9. They probably eat 
10. loves
11. cooks
12. are you doing

1. aren't going to play
2. isn't going to walk
3. am not going to have 
4. is going to go
5. am going to watch
6. aren't going to go
7. am not going to finish 
8. aren't going to buy

C