1. The festival takes place at the beginning of February and lasts 10 days each year.
2. Some scientists believe that mobile phones are responsible for some health problems.
3. We haven't used these machines for a long time
⇒ It's been a long time since we used these machines.
4. Hoa is the best tennis player in the club
⇒ No one else in the club can play tennis better than Hoa.
5. It's a pity they are traveling on uncomfortable buses
⇒ They wish they weren't traveling on uncomfortable buses.
6. My sister spends all her free time decorating her own room.
~Best of luck~