Fill each gap in the sentence with one word

Sientific tragic friendly difficult brilliant famous necessary technical serious

1. They were very ... to me when i first arrived

2. The man finds it ... to stop smoking

3 She looks very ... when she heard the news

4. There were a lot of ... achievements in the 20^th century

5. Changes can easily be made where ...

6 The effect of pollution on the beaches is absolutely ...

7. She is more ... as a writer than as an actress

8. The play they performed was a ... success

9. What is the patient's ... history ?

10. He received some ... training from his father

Những mệnh đề sau đúng hay sai, giải thích

a) A: "∃ x ∈ R: x² + 3x = 4"

b) B: "∀x∈ R: 2x² - 3x - 5 = 0"

c) C: "∀x ∈ R: x² + 2x + 1 ≠ 0"

d) D: "∃ x ∈ N: 3x² + 2x - 1 = 0"

e) E:" ∃ x ∈ Q: 3x² + 2x -1 = 0"

f) F: "∀ x ∈ R: x² + 2x + 5 > 0"

Học sinh vi phạm nội quy nhà trường là vi phạm gì? Vì sao

Cân bằng PTHH

Fe(NO₃)₂ +Fe \(\rightarrow\) Fe (NO₃)₃

số thứ 1:18
số thứ 2:24
21x2=42
2/3 cuả 18 =12
1/2 của 24=12

1.I really don't want to head your complaint about the matter anymore
=> I'm feed_____________________________________________.

2. I wish I had visited Brazil during the 2014 World Cup

=> It's a______________________________________.