ddc ko nè

\(21_{10}=10101_2\)

Mình trình bày

@Bảo

#Cafe

Mk k có nhưng đây là Đạo Đức lớp 1 hả bn???

ĐÂY

LAẦN SAU KO ĐĂNG LINH TINH

1.A
2.A
3.B
4.C
5.B
6.C
7.A
8.A
9.B
10.A
11.B
12.A
13.C
14.B
15.B
16.A
17.A
18.A
19.A
20.C

= 9 / 2

bài hình mà không gửi hình, làm bài = niềm tin hả bạn 

5 he had done all his work, he went home

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9 Mackenzie had written 4 best-sellers

10 were having dinner, there was a knock at the door

11 I was staying in Paris last summer

12 had told him off, I realized I was wrong

13 passed the exam, I had worked very hard

14 had considered what to study, I decided to major in Math

15 she was doing homework, her mom called her out to walk

16 bought a radio, he had checked the price

17 After they argued, they fought

18 she had a fatal accident, she had gone out for a walk