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Hi

tìm chữ số tận cùng :7^1+7^2+...+7^50.giúp mình với ạ .Cảm ơn mọi người

bạn gửi câu hỏi nhầm chỗ rồi nhé!

tôi quá mong manh

yeah

Ex1

1 C

2 A

3 D

4 B

5 C

Ex2

1 D

2 A

3 C

4 C

5 C

Ex3

1 A

2 C

3 B

4 A

5 C

Ex4

6 A

7 C

8 C

9 A

10 D

11 D

Question 12: A

13: C

14 C

15 D

16 A

17 C

18 A

19 D

Bạn chụp full đoạn văn nhé

1 Susan may know the address

2 Joanna might not receive my message

3 The report has to be on my desk tomorrow

4 I was able to finish all my work

5 Nancy didn't have to clean the flat

6 You had better sit down

7 You mustn't smoke in the museum

8 We don't have to bring an umbrella because the weather is beautiful

9 You may need to buy a ticket for your child

10 All new soliders have to have a medical examination

11 Foreigners don't have to register for military service

12 I have never visited such a beautiful city

13 Tom has played the piano for 4 years

14 You should try to avoid all junk food

15 It's such an expensive electric car that I don't think I can buy it

16 She hasn't written to me for nearly 2 years

Mình làm r nhé

Person 1:
I think the cities of the future will be much more eco-friendly. With all the technology we have now, we can create smart cities that use renewable energy and reduce waste. Imagine buildings with solar panels, and electric cars everywhere!

Person 2:
Yes, that's a great idea! I also believe future cities will be more connected. We'll have smart systems for transportation and waste management, making everything more efficient. Plus, with the rise of artificial intelligence, cities might even be able to predict and solve problems before they happen!

Person 1:
Exactly! And I think there will be more green spaces, like parks and gardens, even in busy city centers. It'll help make the environment healthier and more enjoyable for people to live in.

Person 2:
I agree. A balance between technology and nature will be key. The future cities should make life easier, cleaner, and more sustainable for everyone.

1. Students do not have to participate in the English Grand Entice exam.

2. Students mustn't cheat in the exam.

1.it is not compulsory for students to participate in english grandentice exam (not have to)

--> Students don't have to participate in english grandentice exam

2.it is forbidden for students to cheat in the exam (mustn't)

Students mustn't cheat in the exam

1. If I were you, I would read food labels before buying. Your parents should also consider doing this to make healthier choices.

2. Don't forget to wash your hands before having dinner.
   --> Remember to wash your hands before having dinner.