1. I was tired, but I stayed up late to complete my homework.

→ I stayed up late to complete my homework despite being tired./my tiredness.

2. Camping is not as comfortable as staying in a hotel.

→ Staying in a hotel is  more comfortable than camping. 

3. My son read comic books every night when he was nine. 

→ My son used to read comic books every night. 

4. Taking photos in the museum is not permitted. 

→ You mustn’t take photos in the museum. / You are not allowed/banned to take photos in the museum. 

1 A local festival is different from an international festival in its scale.

2 The next semester starts on 5th January. 

3 Although the bus was late, I still arrived at school on time yesterday.

1. Schools typically have breaks during the summer and Tet holiday.

2. People will use self-driving cars to travel around cities more easily.

3. You must show your passport at the airport security check.